2009•Jiangsu nongye xuebaoRequires access
Effects of nitrate inhibitors on yield, nitrate content and nutrition accumulation of Chinese cabbage.
Dongfeng Huang, Weihua Li, Xiaoxuan Qiu
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Abstract
A soil-potted experiment with a control of nitrate-N and ammonium-N(in the ratio of 2 to 3) and 3 trial treatments(i.e.,appending 3 kinds of nitration inhibitors,dicyandiamide,imidazole and pyridine,respectively) was carried out to study on the effects of nitrate inhibitors on yield,nitrate′s concentration,accumulative amount of N,P and K in plant of Chinese cabbage and the concentration of nitrate-N and ammonium-N in soil.Results showed that those 3 kinds of nitrate inhibitors could increase yield and accumulative amount of N in plant of Chinese cabbage by 6.06%-28.55% and 2.38%-38.42%,respectively,and decrease nitrate′s concentration of vegetable by 2.69%-19.66%.But the effects of different nitrate inhibitors on the accumulative amount of P and K in plant and the concentration of nitrate-N and ammonium-N in soil after harvest of Chinese cabbage were various.