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为探讨沿黄灌区带田玉米最高产量时最合理的密度,在1989～1990年进行了这一试验,现将结果简结如下。一、材料与方法试验在靖远县朝阳村的砂壤潮土上进行,播前测定耕作层(0～30厘米)土壤有机质为0.909％～1.298％、全氮0.087％～0.094％、P_2O_50.116％～0.160％、全盐0.085％～0.090％、pH值8.6。试验设5个处理:即3000(对照)、3300、3700、4200、5000株/亩。1989年为233厘米带(小麦126厘米种10行),玉米107厘米种3行,行距与小麦间距均26厘米,小区面积0.028亩;1990年为200厘米带(小麦100厘米种8行),玉米100厘米种3行,行距与小麦间距均23厘米,小区面积0.024
In order to explore the most reasonable density of corn with the highest yield along the Yellow River irrigated area, this experiment was conducted from 1989 to 1990, and the results are summarized as follows. I. Materials and Methods The experiment was carried out on sandy loamy soil in Chaoyang Village, Jingyuan County. The soil organic matter (0.909% -1.298%) and total nitrogen (0.087% -0.094%) of the plow layer (0-30 cm) 116% ~ 0.160%, whole salt 0.085% ~ 0.090%, pH 8.6. Test set up five treatments: namely 3000 (control), 3300,3700,4200,5000 plants / mu. In 1989 it was 233 cm with 10 rows of wheat 126 cm and 107 cm of maize with row spacing of 26 cm and wheat spacing of 0.028 mu. In 1990 it was 200 cm with 8 rows of wheat 100 cm, 100 cm of corn 3 rows, 23 cm spacing and wheat spacing, cell size 0.024