摘要
采用两因素不同水平裂区设计试验,通过多元非线性回归分析,探明了不同种植密度、施氮量对通粳981产量的影响。结果表明:当基本苗为113.8万/hm^2、施氮量为327.4 kg/hm^2时,通粳981具有最大的产量潜力12160.74 kg/hm^2。产量大于11250 kg/hm^2的密、肥合理区间为:基本苗82.5万~135.0万/hm^2、施氮量300.00~356.25 kg/hm^2。
By conducting the split-block experiment with two factors at different levels, we studied the effects of nitrogen fer？tilizer application rate and planting density on the yield of japonica variety “Tongjing 981” through the multivariate nonlinear re？gression analysis. The results showed that the maximum yield potential of “Tongjing 981” could reach 12160.74 kg / hm2under theconditions of 1138000 basic seedlings per hectare and applying 327.4 kg nitrogen per hectare. For obtaining high yield more than11250 kg / hm2, the reasonable basic seedlings should be 825000 ～ 1350000 / hm2, and the proper nitrogen application rate shouldbe 300.00 ～ 356.25 kg / hm2.
出处
《江西农业学报》
CAS
2018年第3期33-35,40,共4页
Acta Agriculturae Jiangxi
基金
国家星火计划项目"优质水稻通粳981及高产配套栽培技术推广应用"(2013GA690123)
江苏省重点研发计划(现代农业)品种后补助项目"优质高产多抗粳稻新品种通粳981的选育与应用"(BE2016398)
关键词
施氮量
种植密度
水稻
通粳981
产量
函数模型
Nitrogen application rate
Planting density
Rice
Tongjing 981
Yield
Functional model
