不同种植密度对玉米茎秆抗倒能力的影响
Effects of Different Planting Densities on Stalk Lodging Resistance of Maize
韩亮1
作者信息
- 1. 蒙城县种植业发展中心,安徽 蒙城 233500
- 折叠
摘要
以安徽蒙城地区为试验地点,探究了不同种植密度(6.00×104、7.00×104和8.00×104株/hm2)对玉米茎秆抗倒能力的影响.结果显示,适中的种植密度(7.00×104株/hm2)可提升玉米株高和千粒质量,对穗粗和穗长影响较小;不当的种植密度(高于8.00×104 株/hm2 或低于6.00×104 株/hm2)可能降低产量与品质.调整种植密度还影响空秆率和倒伏率,适宜密度(8.00×104株/hm2)减少空秆率、增加实际产量;适度降低密度(7.00×104株/hm2)可降低倒伏率,提高抗倒性.然而,高密度种植可能增加倒伏率,威胁产量与品质.
Abstract
Taking Mengcheng area of Anhui Province as the test site,the effects of different planting densities on stalk toppling resis-tance of maize were studied.The results showed,moderate planting density could increase maize plant height and thousand grain weight,but had little effect on ear diameter and ear length.Improper planting density may reduce yield and quality.The adjustment of planting density also affected the vacancy rate and lodging rate,and the appropriate density decreased the vacancy rate and in-creased the actual yield.Moderate decrease of density can reduce lodging rate and improve lodging resistance.However,high densi-ty planting may increase lodging rate and threaten yield and quality.
关键词
玉米/种植密度/生长状况/抗倒/茎秆Key words
maize/planting density/growth status/lodging-resistan/stalk引用本文复制引用
出版年
2024
NETL
NSTL
万方数据