摘要
为研究不同栽培模式对辽宁玉米土壤物理性质、干物质积累、叶面积指数、总粒数、百粒重等产量构成因素的影响,2018年在沈阳以东单6531和辽单588为供试品种,设置常规垄作、平作匀行和平作宽窄行3个栽培模式,同时设置这三种模式对应的67500株/hm^(2)和75000株/hm^(2)种植密度,开展高密条件下栽培模式对品种产量形成效应影响的试验。结果表明,2个品种的3种栽培模式对土壤物理性质的影响差异不显著;同一品种平作宽窄行75000株/hm^(2)密度下的各生育时期干物质积累量和叶面积指数均高于其他模式;同一品种的平作宽窄行模式能够有效增加穗长、穗粒数、百粒重和缩短秃尖长度等产量构成因素,使玉米显著增产,东单6531增产14.39%以上,辽单588增产12.73%以上。宽窄行较匀行具有增产效应,且能使玉米在高密度下达到高产效果。
For studying the effects of cultivation modes on soil physical properties,dry matter accumulation,leaf area index,total seeds,and hundred-grain weight of maize in Liaoning Province,we planted Dongdan 6531 and Liaodan 588 at 2018 with normal traditional ridge planting pattern(TRPP),no ridge with uniform row-spacing planting pattern(URSPP),no ridge with wide-narrow row spacing planting pattern(WNRSPP)modes and their corresponding density at 67500 plants/hm^(2) and 75000 plants/hm^(2).The results showed that there were no significant differences in soil physical properties among cultivation modes.The dry matter accumulation and leaf area index in WNRSPP and 75000 plants/hm^(2) was significant higher than other modes.WNRSPP can significant improve maize yield by enhancing the ear length,total seeds,hundred-grain weight and reduce the ear tip.Dongdan 6531 promoted yield more than 8.37%,Liaodan 588 promoted yield more than 9.42%,the results showed that WNRSPP can produce more yield than URSPP especially in high density.
作者
刘欣芳
李静
徐长成
马骏
邵帅
齐欣
LIU Xin-fang;LI Jing;XU Chang-cheng;MA Jun;SHAO Shuai(QI Xin 1(1.Corn Research Insitute of Liaoning Academy of AgriculturalSciences,Shenyang,Liaoning 110161;Liaoning Seed IndustryDevelopment Center,Shenyang,Liaoning 110034;Liaoning EastAsia Seed Industry Co.LTD,Shenyang,Liaoning 110164)
出处
《辽宁农业科学》
2021年第1期10-13,共4页
Liaoning Agricultural Sciences
基金
国家科技支撑计划项目(204BAD01B01)。
关键词
玉米
栽培
土壤物理性质
干物质积累
叶面积指数
产量
Maize
Cultivation
Soil physical properties
Dry matter accumulation
Leaf area index
Yield
