摘要
研究采用贝克曼生长分析法,结合新疆地区影响春小麦生长发育和产量形成的生态因素,对春小麦主茎型和分蘖型两种类型品种的研究结果表明,不同品种、不同密度干物质积累过程有相同的趋势,即春小麦一生中,表现有三个快速生长时期——拔节期、孕穗期和灌浆期。但快速生长高峰值出现的早晚,处理间有差异,第一高峰值到来早者,最终干物质积累较多,说明春小麦苗期早促的重要性;第二高峰值期处理间变化较大,说明密度对春小麦拔节—孕穗期间干物质积累影响大;第三高峰值期与籽粒干重积累关系最大。数学模拟密度与产量的关系,分蘖型品种45万穗/亩,主茎型品种35万穗/亩,产量最高。
It was discovered that full process of dry matter accumulation for different types and different densities was simillar. Growth tendency in the whole period; the spring wheat appeared three rapid growing stages that were jointing stage, booting stage and milking stage. But since the treatments were different the peak value of the rapid growth may appear sooner or later. The treatment that the first peak value of the rapid growth appeared earlier accumulated more dry matter finally The relationship among them showed that the accumulation of dry matter in periously stage was foundation of growing in the next stage. The growth in the next stage was continuous process of periously stage.The results showed that yield for tillering varieties is higher when ears per mu reached 450 thousand that for main stem types ( xin chun-No2) is 350 thousand ears per mu according to the relationship between imitative density Y=aX2 + bX-c equal and the yield.
出处
《河南职业技术师范学院学报》
1990年第3期61-66,共6页
Journal of Henan Vocation-Technical Teachers College
关键词
小麦
生长分析
干物质
积累
品种
spring wheat, growth analysis, dry matter accumulation
