玉米密度与产量及产量构成因素关系的研究

Study on the Relatioanship between Maize Planting Density and Yield Constitute Factor

通过研究玉米密度与产量以及产量构成因素的关系。结果表明 :密度对玉米秃尖长的影响最大 ,对玉米株高的影响也很大 ,其次是千粒重、行粒数 ,对穗长的影响不显著。密度是影响玉米产量的关键因素 ,攀西地区及其类似地区的玉米高产密度不宜超过 876 0 8株 /hm2 ,最佳经济生产密度为 80 0 0 0～ 85 0 0 0株 /hm2 。

The study analyses the relationship between maize planting density, maize yield and yield constitutes factor. The results are: Planting density has greatest influence on the height of plant and the length of bare ear, then the weight of per 1000 grains, grains, grain number of per row. Planting density makes no notable impact on the ear length. Planting density is the key factor influencing yield; the best maize planting density in Pan xi district and other similar area is 87608 plants/hm 2.