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采用集成栽培模式和农民习惯栽培模式,在5个施氮量的处理下,研究了缓释氮肥不同用量对超级杂交晚稻生长发育和产量的影响,并建立了产量与纯氮施用量的数学模型。结果表明:超级杂交晚稻的最佳施纯氮量和较经济的施纯氮量均为180 kg/hm2,此时2种栽培模式的产量均最高,分别为8.76和7.59 t/hm2。
The effects of different dosage of slow-release nitrogen fertilizer on the growth and yield of super-hybrid late rice were studied under five nitrogen application rates. The mathematical model of yield and pure nitrogen application was established . The results showed that the optimum amount of applied nitrogen and the more economical nitrogen were 180 kg / hm2. The yield of the two cultivation modes was the highest at 8.76 and 7.59 t / hm2, respectively.