確定玉米種植行距的意義
zaijinxingyumizhongzhideshihou,weiletigaoyumidezhongzhixiaoyi,zaishengchanzuoyezhong,huicaiqutiaozhengyumidezhongzhixingjudecuoshi,erzhuyaomudeshitongguoyumidexingjuzhongzhifangshilaigaishanquntijiegou,tigaoguangnengliyonglvdezhongyaotiaojietujing。
研究表明,在密度增大時,配置適當的種植方式,更能發揮密植的增產效果。玉米行距配置方式因品種和地力水平而異。莖葉夾角小、葉片上衝,根係向縱深發展的耐密型品種,在肥力高的地塊上行距應窄些;高稈、葉片平展的品種,行距可寬些。通常玉米種植方式有等行平播、寬窄行密植,壟作等。等行平播優點是植株分布均勻,能充分利用光能,生產更多的光合物質;寬窄行種植能夠改善群體通風透光條件,便於田間管理和操作;壟作有利於玉米早播和幼苗生長。在多雨的季節,壟作比平作便於排水;幹旱時,還可用壟溝灌水,有利於集中施肥。
dangrantigaoyumichanliangdefangshiyouhenduo,quedingyumizhongzhixingjuzhishiqizhongdeyixiangcuoshi,zhenduixiandaiyumizhongzhilaishuo,kexuezhongzhishishixianyumizengchan,zengzhidezhuyaocuoshi,zaiyumizhongzhizhongyunyongkexuejishu,cainengtishengnongmindejingjixiaoyi,tigaozhongzhijijixing。
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