Current issue

• 2011 Vol.1 No.6 Published:15 August 2011

  Effect of Water Stress on Drought-resistance Characteristics of Wheat Seedling with Different Fertilizer and Water Types 2011, 1 (6):  1-7.  Abstract + ( 1878 )   PDF ( 1114KB )   ( 1991 ) In order to provide the scientific basis for early screening of wheat drought-resistant identification indices, and cultivation and utilization of wheat cultivars. The physiological and biochemical changes in leaves of six wheat cultivars with different fertilizer and water types were studied under the water stress of PEG-6000. The results showed that the seedling survival percentage, root-shoot ratio and chlorophyll content all decreased, while the proline content and relative membrane permeability increased, the root activity revealed an appreciably increasing tendency and then declined with the water stress time. The seedling survival percentage, root-shoot ratio, chlorophyll content and SOD activity of dry land cultivars ‘Qingmai 6’,‘Jihan 5034’and‘Lumai 21’were relatively higher and declined more slowly, while the relative membrane permeability was lower; the change amplitudes of these mentioned drought-resistance indices of wheat cultivars ‘Yannong 24’and‘Jimai 22’ with high fertilizer and water types were larger; the change amplitudes of these mentioned drought-resistance indices of wheat cultivars ‘Yannong 21’ with middle fertilizer and water types lied between high fertilizer and water types and dry land cultivars. ‘Qingmai 6’could maintain the relatively superior leaf structure and functional status under water stress, and the relatively high drought-resistance index, which led to its strong drought resistance.

  The Research Discussed on Effect Increasing Yield of Soybean with Different Ridges Cultivation 2011, 1 (6):  8-11.  Abstract + ( 1983 )   PDF ( 984KB )   ( 1783 ) To explore the impact of soybean yield on different orientation of the ridge ,the leaf area index, dry matter accumulation, the content of chlorophyll the yield and its characters of soybean with different ridges cultivation were tested, the result showed that: The size of leaf area index were in 7.0 above，in the podding period southwest to northeast ridges the highest was 6.52, dry matter accumulation was highest 18.38 g of northeast to southwest ridges in flowering period, and 30.98g of southwest to northeast ridges in podding period, the content of chlorophyll change still performance highest for the northeast to southwest ,the highest hectares yield were 2746.0 kilograms of Northeast to southwest ridges , Compared with other ridges average yield increased 22.51 kilograms.

  The Effect of Different Concentration of Salicylic Acid on the Seed Germination and Physiological Characteristics of Hibiscus syriacus Linn. 2011, 1 (6):  12-15.  Abstract + ( 1857 )   PDF ( 1040KB )   ( 1839 ) In order to study the effect of different concentration of salicylic acid on the seed germination and physiological characteristics change of Hibiscus syriacus Linn., the author tested under soilless culture, set 4 concentration of SA treatments that S1--S4 were 30 mg/L, 60 mg/L, 120 mg/L, 240 mg/L, respectively. A control, 3 times repeated. The results showed that: the seed germination rate and germination of Hibiscus syriacus Linn. in the 0-60 mg/L range gradually increased and when SA concentration was higher than 120 mg/L, that became lower; S1 treatment radicle extension growth and conductivity within the cotyledons was higher than the control and other treatment lower than the control, MDA was increased with the SA concentration increased, protection enzymes activity were lower than the control; when used SA can improved proline content in cotyledons and reduced soluble sugar content; when SA Concentration in 30-120 mg/L range could increase the soluble protein content and when reached 240 mg/L soluble protein became lower. By comprehensive analysis, when SA concentration was in 60-120 mg/L, the seed germination could be promote and seedling resistance improved.

  The Study on Biological Characteristics of Bupleurum chinense DC. seeds 2011, 1 (6):  16-22.  Abstract + ( 1884 )   PDF ( 1071KB )   ( 1860 ) In order to study seed biological characteristics of Bupleurum chinense DC. and discuss the variation rules the seeds, the size, one-thousand-seed weight, viability, germination rate of twelve Bupleurum chinense DC. cultivars seeds were determined. The significant difference analysis and correlation analysis on one-thousand-seed weight, viability and germination rate were conducted. The results showed that correlation between the three indexes of different cultivars reached the significant level and the correlation coefficient between viability and germination rate was the highest, 0.86, which was extremely significant. Difference of germination rate between the cultivars was obvious and germination process was distinct. The starting germination dates of the cultivars with high germination rate such as 5-Zc, were earlier, they also possessed longer continuous germination time and the germination peak. The starting germination dates of the cultivars with low germination rate such as 11-Zq, were later; their continuous germination time was shorter and had stable germination numbers and no germination peak. The cultivars with high germination were of great significance to cultivars selection and production practice.

  Modeling and studying of oriental fruit fly (Bactrocera dorsalis Hendel) occurrence and dynamic in citrus orchard 2011, 1 (6):  23-28.  Abstract + ( 1705 )   PDF ( 1043KB )   ( 1603 ) In order to explore the regulation of oriental fruit fly invasion, dissemination and damage, and improve monitoring and control techniques, data of the annual population dynamics was collecting by applying specific sex pheromone traps in 35 monitoring points in the citrus orchard all over 19 communities of Linhai county and 2 systemic monitoring points in Fulong citrus orchard, Gucheng, and Linhai fruit market during 2008-2010. The result showed that the temporal and spatial population distribution of oriental fruit fly invasion and dissemination was tower-type in Linhai area, which means the invasion from the center city spreading to the surrounding area. Population dynamics of oriental fruit fly can usually be described by a single peak curve. The first trap of adult insects appears between mid-June and mid-July; with growth inflection point formed in Early-August, and the biggest amount of population appeared between September and October. The main factors affecting the population dynamics are population base, climate and habitat conditions. Oriental fruit fly population base (m6) and the annual trapped population (M) can be described by relational model M=23.8339m6+59.8003(n=6, r=0.9735 **). The relationship between 10days average population density (mn) and 10days average temperature in the latest 3 months (tn-9) is mn=1.9248tn-9-14.88063 (n=72, r=0.5123**). The relation models among trapped population of citrus fruiting period (M), infect rate of plant (R%), infect rate of fruit (P%), amount of larvae per fruit (N) are: R=0.3667M-1.2746 (n=11,r=0.8901**); P=0.0581R+0.3112 (n=11,r=0.9649**); N=0.6438P+0.9610 (n=11,r=0.7000*). These models of oriental fruit fly invasion and dissemination can reflect dynamic changes of oriental fruit fly in citrus orchard and help to make the better forecast and control decision. It is important for improving monitoring and sustainable control.

  Advances in Ecological Compensation of Facility Agriculture in Tianjin 2011, 1 (6):  29-35.  Abstract + ( 2317 )   PDF ( 1013KB )   ( 1952 ) The developing situation of the modern facility agriculture and corresponding policy measurements of agro-ecological compensation in Tianjin was overviewed. Regarding to the ecological environmental problem in the development of the intensive facility agriculture, learning from EU advanced environmental-friendly technical measures and successful policy management experiences, based on the demonstration and achievement of international cooperative projects between Sino and EU, Sino and Germany, policy suggestions, including to study on the agro-ecological compensation in the facility agriculture; to draw up agro-ecological compensation developing scheme of Tianjin and to set up special subsidy or fund of which, combined with coastal metropolis agro-characteristics, to perfect technical support system of facility agriculture agro-ecological compensation (FAAEC); to establish monitoring and evaluating system on FAAEC of coastal metropolis; to enhance farmers organized level, to promote industrial progress of the facility agriculture, was put forward to provide theoretical and practical reference for the Tianjin government.

  The Modified Effects of Trichoderma aureoviride 1010 on Some Soil Environment from the Axial Root of Cherry-tomato 2011, 1 (6):  36-41.  Abstract + ( 1789 )   PDF ( 1069KB )   ( 1742 ) Modified soil environment potential of Trichoderma aureoviride T1010 was assessed in soil by its adjust on microflora population and physical character and chemical substance. The population of microflora was isolated from soil by dilution method of counting. The physical character was assessed by weighting-in soil in laboratory. The chemical substance was assessed by chemical reaction. With cherry-tomato growing, the T1010 advanced some beneficial microflora to grow. The microflora positive correlating with T1010 was notable. The azotobacter population was 7.04 times than those in the beginning, and more 58.02% than the control. The T1010 controlled the other fungus to grow. The population of the other fungus was less 52.99% than those at the beginning, and less 79.47% than the control. The T1010 adjusted the physical character, the soil specific gravity and bulk density became lower than the control, the porosity was close to 50%. The N and organic matter increased than the control. The available P decreased than the control. The T1010 population was negatively correlating with available P. The lateral root was 2.44 times than CK. The Rhizoctonia solani disease infecting index got down 36.36%. T1010 is considered to be a potential adjust soil agent for amend soil physical character, increase some microflora, advance chemical solubility substances.

  Study of Enchancing Detection Sensitivity of Microchip Chemiluminescence System 2011, 1 (6):  42-48.  Abstract + ( 1874 )   PDF ( 1438KB )   ( 1833 ) Based on the metal ion-catalyzed luminol–peroxide reaction, several different configuration microchip have been compared. Influencing factors of chemiluminescence sigals, such as concentration and flow rate of reagents and scale of microchannels have been discussed. We proposed a new microflow injection system with double spiral channel configuration and the sensitivity was greatly enhanced due to more efficient mixing of the analyte and reagent solutions. Under the optimized conditions, a linear calibration curve (R2 = 0.997) over the range 5.0 × 10-9 to 2.0 × 10-6 mol L-1 was obtained with the detection limit of 1.50×10?9 mol L?1 for the chromium ion. The relative standard deviation was found to be 1.59 % (n = 11) for 6.0×10?8 mol L?1. The proposed method has been applied successfully to the analysis of natural lake water and tap water.

  Research Progress of Equipment Standard for Healthy Aquaculture 2011, 1 (6):  49-52.  Abstract + ( 1761 )   PDF ( 843KB )   ( 1567 ) For reasons of perfecting standard system, shepherding aquaculture facilities amending standards in the country, achieving the combination of technology innovation and standardization, for meeting the needs of sustainable development of fisheries, according to the research and collecting the information at home and abroad, combing the existing relevant standards about aquaculture facilities and classification discussion, we recomposed the standard system of aquaculture facilities on the base of “Principles and requirements for preparing diagrams of standard system” and “Guideline for the work of complex standardization”. This paper reviews the development of China healthy aquaculture, briefly introduces the current situation of equipment standard for healthy aquaculture, and points out the direction of future development.

  A Research of the Songhua River Fish Species Resource from Nenjiang Section to Tongjiang Section 2011, 1 (6):  53-57.  Abstract + ( 1533 )   PDF ( 1021KB )   ( 1858 ) In order to understand the songhua river fish species composition of the present situation and development trend, the author in 2010 May to October, through local residents interviewing, trade market researching and sample collection, fish resources in the Songhua River were investigated. The results showed that the total numbers of fish species were 69 in the survey area, belonging to 2 classes, 8 orders, 18 families, accounting for 63.9% of Heilongjiang Province’s fish species. Cyprinidae were important economic fishes which have the largest number of 35, about 50.7% of total number. The followed is Cobitidae, which had 7 species, accounting for about 10.2% of total. Aslmonids and Bagridae both had 4 species, accounting for 5.8%. The other 19 species accounting for 27.5% were belonging to another 14 families. According to the results of the survey, the fish resources had a decreasing trend, compared with the Songhua River from the Nenjiang section to the Tongjiang section, and relevant suggestions were proposed for this phenomenon.

  Practice and Research for Agricultural Newspaper Developing Sci-tech Service 2011, 1 (6):  58-61.  Abstract + ( 1580 )   PDF ( 928KB )   ( 1558 ) In order to solve the problem that system appears to lack in the grass-roots agricultural sci-tech service and research a new way for developing agricultural newspaper. The author studied that using newspaper to develop sci-tech service. This research analyzed the advantages of agricultural newspaper, it compared with the modern main medium, it had brand, medium, information and peoples resources. This research still analyzed the experiences and the effects of Jiangsu agricultural sci-tech newspaper. The results showed that agricultural newspaper could carry this function, it was a vigorous new medium, it was effective for farmers, at the same time, the newspaper oneself also got a rapid development.

  The Study of Pattern Innovation Problems of Pushing the Development of Modern Agriculture in Henan Province 2011, 1 (6):  62-66.  Abstract + ( 1679 )   PDF ( 940KB )   ( 1626 ) The paper focused on the pattern innovation of development of modern agriculture in Henan Province and the whole country, which will provide reference for the decision-making. Through the typical investigation, it was appropriate to choose and innovate the development patterns of modern agriculture in the area of county, contraposing the subjective and objective factors that constrained the development of modern agriculture. The following measures should be taken: applying marketization means to bring in talents and cultivate modern farmer; persevering in technological innovation and cooperative management to promote the agribusiness; reforming and innovating the policies to develop agricultural productivity. In other words, developing modern agriculture was system engineering, in which technology, talents and management pattern were all essential.