摘要
在不同种植方式下 ,对豫麦 18号、豫麦 2 1号、豫麦 4 9号、93中 6等 4个不同类型小麦品种的产量构成因素进行了研究。结果表明 ,等行距与宽窄行之间产量无明显差异 ,低播量、高播量下差异均达极显著水平。叶面积系数从开花到乳熟都呈下降趋势 ,只有 93中 6呈上升趋势 ,豫麦2 1号、豫麦 4 9号、豫麦 18号间无差异。豫麦 18号灌浆速度最快 ,豫麦 2 1号最慢 ,豫麦 4 9号和 93中 6相比 ,前者前期灌浆快 ,后者后期灌浆快 ,93中 6硝酸还原酶活性最高。豫麦 18号次之 ,豫麦2 1号第 3,豫麦 4
This paper studied yield components of four wheat varieties under the different planting method.The result showed that there was no significant difference between 15 cm equidistant row spacing and 20 cm 10 cm wide narrow row.A significant difference among varieties under the low density and high density was existed.Dynamic change of leaf area index was different significantly among varieties.From flowering to milk ripe stage,it has descend trend,only 93zhong6 has ascend trend ,The results also showed that its leaf function period lasted longer,it was beneficial for kernel filling.Yumai 18 had fast kernel filling,high grain weight;Yumai 21had slowest kernel filling,low 1000 kernel weight and lower yield;comparing Yumai 49 with 93zhong6 ,in pre filling stage, yumai 49 surpass 93zhong6 ,but in later stage, 93zhong6 exceed yumai 49. 93zhong6 had the highest NRA, Yumai 18 was second, Yumai 21 was third,yumai 49 was the lowest.
出处
《华北农学报》
CSCD
北大核心
2000年第2期100-105,共6页
Acta Agriculturae Boreali-Sinica
基金
国家"九五"攻关项目! (95 - 0 0 1 - 0 2 - 1 2 )
