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通过在赤壁市布置晚稻的“3414”肥料效应试验,研究了氮、磷、钾肥对晚稻产量和经济效益的影响。结果表明,氮、磷、钾肥对晚稻都具有显著的增产增收效果,获得的最大增产量分别为1500、750和1350kg·hm-2,相应增产率分别为23.1%、10.3%和20.3%,纯增收入分别为1609.5、822.8和1612.7元·hm-2。通过配置三元二次和一元二次肥效模型,结合试验实际情况,确定晚稻的推荐施肥量,N、P2O5和K2O的最高产量施用量分别为179.9、52.7、108.2kg·hm-2,最佳经济施用量分别为146.7、46.8、94.5kg·hm-2。
Through “3414” fertilizer effect experiment of late rice arranged in Chibi city, the effects of nitrogen, phosphorus and potassium fertilizer on yield and economic benefit of late rice were studied. The results showed that nitrogen, phosphorus and potassium fertilizers had significant effects on the yield and income of late rice. The maximum yields were 1500, 750 and 1350 kg · hm-2, respectively, and the corresponding rates of increase were 23.1%, 10.3% and 20.3%, respectively Increase income respectively 1609.5,822.8 and 1612.7 yuan · hm-2. Through the configuration of the three-quadratic and one-quadratic fertilization model, combined with the actual situation of the experiment, the recommended fertilization amount of late rice was determined, and the highest yield of N, P2O5 and K2O were 179.9, 52.7 and 108.2 kg · hm-2, respectively Economic application rates were 146.7,46.8,94.5kg · hm-2.