不同密度对黑膜缓控释肥栽培玉米产量及性状的影响

Effects of Different Planting Density on Yield of Maize under Controlled Release Fertilizer with Black Film Mulching Condictions

为了探索玉米获得高产的适宜种植密度,采用6个不同密度水平的单因子随机区组田间试验,进行不同密度对玉米产量、株型性状和经济性状影响的比较研究。结果表明:玉米产量随着密度的增加呈先增加后降低的变化,以密度3 400株/667m2的产量较高640.76kg/667m2,平均增产达6.86%,增产达显著或极显著水平。玉米茎粗、穗粗、穗粒数、穗粒重均随着密度的增加而逐渐降低,秃尖长、空杆率均随着密度的增加而逐渐增加。不同密度对其余的6个性状的影响均较小。在贵州思南种植区域,玉米获得高产的移栽密度为3 400株/667m2。

In order to explore the appropriate planting density of maize,single randomized block test of 6planting density was applied on effect of different planting density on yield,plant traits and economic traits of maize.The results showed that the yield of maize increased with the increase of planting density at beginning and decrease after a certain planting density,the yield of planting density is the greatest,yielded 640.76kg/667m2,increased 6.86%compare to other densities,it's significantly and extreme significantly higher than others.Diameter of plants,cornjob,number of grains,grains weight is decreased with the increase of planting density,tip length,vacant stem rate increased with the increase of planting density.But other 6traits are not significant.So planting density of 3400plants/667m2 was proposed in areas of Sinan,Guizhou.