不同栽培模式下青贮玉米的农艺性状

为探究不同的栽培模式对青贮玉米(Zea mays)农艺性状及产量形成的影响,选用新饲玉19号在(30+60)、(10+66)、(17+50)、(60+60)、(76+76)、(40+60)和(30+90)cm 7种行距栽培模式下对比研究。结果表明,(60+60)cm的栽培模式中青贮玉米株高、穗位高等农艺性状以及单株叶面积、倒四叶SPAD值和单株干鲜重均高于其他栽培模式,随着栽培行距的增加,青贮玉米冠层中下部透光率有所增加,(60+60)cm等行距栽培下青贮玉米冠层结构布局合理,生物量显著高于其他栽培模式(P=0.003)。不同的栽培模式中,随着行距的增加玉米农艺性状表现良好,(60+60)cm等行距栽培时有利于青贮玉米产量的形成。

Effect of different planting patterns on agronomic traits of silage maize

To investigate the effects of different planting patterns on agronomic characters and yield formation of silage maize,Xinsiyu 1 9 silage maize was selected,and there were seven different row spacing planting pat-terns (30+60)、(10+66)、(17+50)、(60+60)、(76+76)、(40+60)and (30+90)cm.The results showed that the plant height,ear height,and other agronomic traits,leaf area per plant,SPAD value,and dry weight per plant of the (60+60)cm planting pattern were higher than those of the other cropping patterns.With the in-crease in planting spacing,the light transmittance in the lower canopy of silage maize was increased.The cano-py structure of silage maize is reasonable when planted in (60+60)cm,the yield of silage maize under (60+60)cm cultivation was significantly higher than that of other planting models.In different planting patterns, the agronomic traits of maize were good with the increase in row spacing,and it is conducive to the formation of silage maize production when planted in the (60+60)cm planting model.