半干旱区梯田冬小麦膜侧沟播栽培密度试验

Density Assay of Winter Wheat Gouge Planting with Plastic Film in Semi-Arid Terrace

试验共设5个密度处理,设计播量区间240～660万粒/hm2,变幅105万粒/hm2。结果表明,以庄浪县为代表的旱寒区冬小麦膜侧沟播栽培靠主茎成穗,分蘖成穗率较低。在生产上,合理的群体密度基本苗360万株/hm2,即播量450万粒/hm2左右。

This examination has five disposal about density,the planting quantity is about 2400～6600 thousand grain each square meter per hour.It can change 1050 thousand grain each square meter per hour.The result of the examination expresses that the side-planting method is used in Zhuanglang tour which plants wheat in dryland and cold.The candex will grow the fringy wheat,the wheat doesn’t good if it is planted in channel.The reasonable wheat group-density is 3600 thousand each square meter.That is,the planting quantity is 4500 thousand grain each square meter per hour.