摘要
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。
A ＂3414＂ fertilizer experiment was carried out in Chibi city to determine the effect of nitrogen, phosphorus and potassium fertilization on late-season flee. The result showed that the yield of late-season rice increased significantly with N, P and K fertilizer application by 1500,750 and 1 350 kg·hm^-2, and by 23.13%, 10.33% and 20.3%. Compared with the control, income 1609.5, 822.8 and 1 612.7 yuan·hm^-2,respeetively. According to fertilizer effect,N, P2O5 and K2O application rate to get the highest yield were 179.9 kg·hm^-2, 52.7 kg·hm^-2 and 108.2 kg·hm^-2, and N, P2O5 and K2O application rate to get the highest profit were 146.7 kg·hm^-2, 46.8 kg·hm^-2 and 94.5 kg·hm^-2, respectively.
出处
《湖北农业科学》
北大核心
2009年第2期306-309,共4页
Hubei Agricultural Sciences
基金
国家"十一五"科技支撑计划重点项目(2008BADA4B08)
国家测土配方施肥项目
关键词
晚稻
“3414”肥效试验
施肥效果
推荐施肥量
late-season rice
＂3414＂ fertilizer experiment
fertilization effect
fertilizer recommendation
