论文部分内容阅读
以国审玉米杂交种沈玉33为试材,按种子质量进行分级,设大粒种、中粒种、小粒种和混合粒种4个处理,研究不同种子分级对玉米产量及产量构成因素的影响。研究结果表明:种子质量分级对玉米产量和产量构成要素存在显著影响。同一品种,大粒种对产量及千粒重均有正向作用,显著大于中、小粒种和混合粒种;小粒种播种,表现为产量、有效穗数和千粒重较低,显著低于中粒种、混合粒种。
Taking Shenyu 33, a national corn hybrid, as the test material, the seeds were graded according to the seed quality. Four treatments, large seed, medium seed, small seed and mixed grain, were conducted to study the effects of different seed grades on the yield and yield components of maize . The results showed that seed quality grading had a significant effect on the yield and yield components of maize. The same variety and large grain had a positive effect on the yield and 1000-grain weight, significantly larger than the medium and small grains and mixed grain. The sowing of the small grain showed the lower yield, effective panicle number and 1000-grain weight, Seed species.