两个玉米品种混种对产量及产量构成因素的影响

Effects of Mixed Planting of Two Maize Varieties on Maize Yield and Component Factors

选用黑龙江省早熟区生产上推广面积较大的玉米品种克单11和克单12为试验材料,两个品种1:1田间混种和两个品种各自清种对比,在不同种植密度下研究1:1混种对其产量及产量构成因素等性状的影响。结果表明,克单11与克单12在混种条件下比清种百粒重、穗长和穗粗均有一定程度的增加,株高与穗位高无明显变化,混种产量高于清种产量。

Selected two maize varieties of Kedanl 1 and Kedanl2, which had been planted in larger cropped area in early maturity region of Heilongjiang province, were used as experimental materials. Comparisons between mixed varieties planted by ratio of 1：1 and normal each variety was made to study the effects of mixed planting under different density with ratio of 1：1 on the yield and its component factors. The results showed that 100-grains weight, ear length and ear diameter of Kedanl 1 and Kedanl2 increased to a certain extent in mixed condition, plant height and ear height had no significant changes, whereas the yield of mixed was higher than the normal single variety.