种植密度对邯玉396产量及主要农艺性状的影响

Effects of Planting Density on Yield and Main Agronomic Characters of Hanyu 396

研究不同种植密度对邯玉396产量及主要农艺性状的影响。结果表明,邯玉396玉米产量受种植密度的影响比较明显,随着种植密度的逐渐增加,产量呈先升后降的变化趋势,在密度为7.50万株/hm^2时,产量最高;种植密度对邯玉396穗长、穗粗、行粒数以及出籽率有显著影响,随着种植密度的增加,穗长变短,穗粗变细,行粒数减少,出籽率降低;超过适宜种植密度7.50万株/hm^2后,倒伏率明显增加,空秆增多,秃尖增长,产量降低。邯玉396种植密度为7.50万株/hm^2时,可以充分发挥该品种的丰产特性,产量最高,经济效益最好。

The effects of different planting densities on yield and main agronomic characters of Hanyu 396 were studied.The results showed that the yield of maize variety Hanyu 396 was obviously affected by planting density.With the increasing of planting density,the yield increased first and then decreased,when the plant density was 75000 plants/hm2,the yield was the highest.The plant density had a significant impact on the ear length,ear diameter,grain number per row and seed yield of Hanyu 396.With the increase of planting density,the ear length became shorter,the ear diameter became thinner,the grain number per row decreased,and the seed yield decreased.After exceeding the suitable planting density 75000 plants/hm2,the lodging rate increased obviously,the number of empty stems increased,the bald tip increased,and the yield decreased.It is a conclusion when the planting density of Hanyu 396 is 75000 plants/hm2,it can give full play to the high-yield characteristics of the variety,with the highest yield and the best economic benefits.