大豆中黄30栽培密度研究

对已通过国家审定的大豆品种中黄30,安排不同栽培密度试验,结果表明:密度为27.0万株/hm2时大豆产量最高,为4 821.15 kg/hm2;其后产量高低的密度依次为25.5、24.0、21.0、28.5、22.5万株/hm2,可以看出,随着密度增加,产量开始时逐渐升高,在27.0万株/hm2时达到峰值,此后又逐渐降低。

A Test on Planting Density of Soybean Variety ＂Zhonghuang 30＂

A test was made on different planting densities of "Zhonghuang 30" which had be approved by State as a soybean variety.The result shows that the highest yield,4821.15 kg/hm2,was got with the planting density of 270 thousand plants/hm2 and the rank of the other treatments in density are 250 thousand plants/hm2,240 thousand plants/hm2,210 thousand plants/hm2,285 thousand plants/hm2 and 225 thousand plants/hm2 according to the level of the yields from high to low.It can be seen that with increase of the planting densities the yields were increasing gradually and reached the peak at the density of 270 thousand plants/hm2 and then decreasing gradually with further increase of the planting densities.