摘要
采用随机区组设计,研究种植密度与施肥水平对几个小麦品种(系)产量构成的影响。结果表明:密度为每亩10万基本苗产量最高,密度增高或降低,产量都降低;最高苗及有效穗随密度的上升而上升,上林率、千]重、单稳重、穗粒数、收获指数随密度的上升而降低。亩施20个纯氮的中肥水平产量高于亩施26个纯氮的高肥水平,高肥处理比之中肥处理,最高苗及有效穗增高,穗粒数略有增高,单穗重、千粒重、收获指数降低。
The effects on planting density and the amount of fertilizer applied to the yield components of several wheat varieties are studied by mean of random design.The results are as follow:①As the planting density is 100 thousands per mu the yield of wheat is the hightest.②The increase of the effective ears is just as same as the planting density. ③As the density increases,the weight of 1000—grain and per ear,the grains of each ear are decreased as well.④The yield of 20 net nitrogen applied per mu is over that of 26 because the weight of ear and 1000— grain in the latter is less than in the former.
关键词
小麦
产量
构成
密度
肥料
wheat
density
amount of fertilizer applied
yield components
