施氮量与栽培密度对Ⅱ优航1号作再生稻产量的影响

采用两因素随机区组田间试验方法,研究氮肥施用量与栽培密度对Ⅱ优航1号作早稻再生稻栽培产量的影响。结果表明:头季施氮量、栽培密度、施氮量与栽培密度互作对头季稻产量差异极显著,但对再生季产量差异不显著。栽培密度对两季总产量差异显著。头季每公顷施纯N 150kg与栽培密度22.5￣30万丛搭配和每公顷施纯N 195￣240kg与栽培密度15￣30万丛搭配,配套其他高产栽培措施,再生栽培能获得两季高产。再生季有效穗与头季有效穗呈显著正相关。

Effects of Amount of Nitrogen Applied and Planting density on Grain Yield of II youhang1 using as ratoon rice cultivar

The two factor random experiments were conducted to study the effects of nitrogen applied and planting density on ratoon rice yield of II youhang1 on culture of early rice.The results showed that the main rice yield on nitrogen applied,planting density,reciprocity nitrogen applied and planting density was best remarkable and the ratoon rice yield was not remarkable.The two season total yield on planting density was remarkable.In main rice it used 150kg N per hm2and Planting density 225000 ~300000 hills per hm2 as 195~240kg N per hm2 and planting density 150000 ~300000 hills per hm2,It was work in that other supplemental culture measures of high yield,The two season high yield was cropped on ratoon rice cultivar.Effective panicles of the ratoon rice and the main rice was remarkable relation.