Effects of Irrigation Conditions and Environmental Factors on Asparagus Growth

doi:10.11923/j.issn.2095-4050.cjas2022-0164

Abstract

Abstract:

Two asparagus varieties, ‘Champion’and ‘Jingzi’, were chosen to test the difficulty of planting asparagus in arid and semiarid areas. Three irrigation conditions were set with field moisture capacity of 60% (T₁), 45% (T₂) and 30% (T₃), respectively. The growth characteristics of asparagus including stem height and canopy size were compared among the three irrigation conditions so as to optimize the irrigation condition for asparagus growth. The photosynthetically active radiation, air temperature, air humidity, vapor pressure and soil temperature were synchronously monitored using a CR-3000 small automatic meteorological station. Then the effects of these environmental factors on asparagus growth were analyzed. Results showed that the dynamic growing characteristics of stem height and canopy size were both basically consistent between the two varieties under the three irrigation conditions. Under irrigation condition T₃, the two indices of ‘Champion’ were both the optimal and increased more compared with those under irrigation conditions T₁ and T₂. Under irrigation condition T₂, the two indices of ‘Jingzi’ were both the optimal and increased more than those under irrigation conditions T₁ and T₃. The dynamic growing characteristics of asparagus stem height and canopy size were correlated very significantly negatively with photosynthetically active radiation, very significantly positively with air humidity, and significantly positively with vapor pressure. Air humidity and vapor pressure were the dominant factors that promoted the growth and development of asparagus. In conclusion, ‘Champion’ grows stronger than ‘Jingzi’, and the irrigation condition T₃ promotes the growth of asparagus. Asparagus shall be planted in a cool and wet environment without strong light.

Key words: irrigation condition, environmental factor, asparagus, growth characteristics, correlation

QI Wei, GUO Yuefeng, BU Fanjing. Effects of Irrigation Conditions and Environmental Factors on Asparagus Growth[J]. Journal of Agriculture, 2023, 13(3): 71-75.

Figures/Tables 6

References 23

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灌水处理	芦笋品种	光合有效辐射	空气温度	空气湿度	水汽压	土壤温度
T₁	冠军	-0.736^**	-0.344	0.721^**	0.604^*	-0.317
T₂		-0.773^**	-0.352	0.722^**	0.605^*	-0.320
T₃		-0.804^**	-0.383	0.756^**	0.628^*	-0.330
T₁	京紫	-0.685^**	-0.333	0.625^**	0.469	-0.309
T₂		-0.770^**	-0.402	0.688^*	0.553^*	-0.404
T₃		-0.743^**	-0.398	0.688^*	0.538	-0.343

灌水处理	芦笋品种	光合有效辐射	空气温度	空气湿度	水汽压	土壤温度
T₁	冠军	-0.736^**	-0.344	0.721^**	0.604^*	-0.317
T₂		-0.773^**	-0.352	0.722^**	0.605^*	-0.320
T₃		-0.804^**	-0.383	0.756^**	0.628^*	-0.330
T₁	京紫	-0.685^**	-0.333	0.625^**	0.469	-0.309
T₂		-0.770^**	-0.402	0.688^*	0.553^*	-0.404
T₃		-0.743^**	-0.398	0.688^*	0.538	-0.343

灌水处理	芦笋品种	光合有效辐射	空气温度	空气湿度	水汽压	土壤温度
T₁	冠军	-0.766^**	-0.409	0.720^**	0.569^*	-0.374
T₂		-0.816^**	-0.302	0.736^**	0.650^*	-0.272
T₃		-0.756^**	-0.365	0.723^**	0.600^*	-0.340
T₁	京紫	-0.707^**	-0.390	0.651^*	0.506	-0.345
T₂		-0.742^**	-0.364	0.677^*	0.550	-0.306
T₃		-0.756^**	-0.344	0.659^*	0.545	-0.346

灌水处理	芦笋品种	光合有效辐射	空气温度	空气湿度	水汽压	土壤温度
T₁	冠军	-0.766^**	-0.409	0.720^**	0.569^*	-0.374
T₂		-0.816^**	-0.302	0.736^**	0.650^*	-0.272
T₃		-0.756^**	-0.365	0.723^**	0.600^*	-0.340
T₁	京紫	-0.707^**	-0.390	0.651^*	0.506	-0.345
T₂		-0.742^**	-0.364	0.677^*	0.550	-0.306
T₃		-0.756^**	-0.344	0.659^*	0.545	-0.346