Abstract:

A total of three organic fertilizer application amounts, T1-T3 and CK (control) were set up in Taizhou and Taixing to explore the influence of organic fertilizer application on the growth and development, eating quality and soil nutrients of taro, respectively, aiming to provide a basis for scientific fertilization on taro. The results showed that plant height at the 6^th and 12^th leaf stages of T2 and T3 was significantly higher than that of CK in Taizhou and Taixing (P<0.05), the plant height of T1 was only significantly higher than that of CK at the 12^th leaf stage in Taixing, and there was no significant difference at the 6^th and 12^th leaf stage between T1 and CK in Taizhou. The average leaf area index (LAI) at the 6^th leaf stage of T3 was 0.31 in Taixing, which was significantly higher than that of other treatments, and the difference of LAI among other treatments was not significant. The LAI at the 12^th leaf stage of T3 was 0.71 and 0.75 in Taizhou and Taixing, respectively, which were significantly higher than that of CK. The application amount of organic fertilizer was significantly and positively correlated with the taste, fragrance index and soil organic matter, with the correlation coefficient of 0.89, 0.86 and 0.79, respectively. The alkaline nitrogen and available phosphorus of T2 and T3 were significantly higher than those of CK. The maximum and minimum amount of available potassium in soil was 174 mg/kg (T2) and 159 mg/kg (T3) in Taizhou, respectively, while in Taixing, the maximum was found in CK of 172 mg/kg, and the minimum was found in T3 of 140 mg/kg.

Key words: Organic Fertilizer, Taro, Production, Eating Quality, Soil Nutrients