宁夏农林科技
寧夏農林科技
저하농림과기
Ningxia Journal of Agriculture and Forestry Science and technology
2015年
8期
1-2,12
,共3页
玉米%产量%相关分析%通径分析%宁夏引黄灌区
玉米%產量%相關分析%通徑分析%寧夏引黃灌區
옥미%산량%상관분석%통경분석%저하인황관구
Maize%Yield%Correlation analysis%Path analysis%Ningxia Yellow River Irrigation Area
为了解高产玉米品种产量构成三因素对产量影响的相对重要性,采用相关及通径分析法,对宁夏引黄灌区3个不同类型玉米品种的产量及主要产量性状进行统计分析.结果表明:先玉335、正大12和东单60三个玉米品种在宁夏灌区灌溉条件下都具有产量15 000 kg/hm2以上的生产潜力,其中先玉335的高产潜力更大,产量主效最大,其丰产性较好;3个主要性状对产量影响的顺序为有效穗数>千粒重>穗粒数,决策系数分析显示,有效穗数、千粒重对产量的综合作用较大,是产量高低的重要决定因素,增加有效穗数对获得高产至关重要,但在保证一定有效穗数的前提下,提高千粒重也是获得高产的重要途径.提出,在宁夏生态条件下,玉米高产栽培中在保证一定有效穗数的前提下,栽培措施上应以提高千粒重、选择中穗型品种、保持一定穗粒数来达到增产的目的.
為瞭解高產玉米品種產量構成三因素對產量影響的相對重要性,採用相關及通徑分析法,對寧夏引黃灌區3箇不同類型玉米品種的產量及主要產量性狀進行統計分析.結果錶明:先玉335、正大12和東單60三箇玉米品種在寧夏灌區灌溉條件下都具有產量15 000 kg/hm2以上的生產潛力,其中先玉335的高產潛力更大,產量主效最大,其豐產性較好;3箇主要性狀對產量影響的順序為有效穗數>韆粒重>穗粒數,決策繫數分析顯示,有效穗數、韆粒重對產量的綜閤作用較大,是產量高低的重要決定因素,增加有效穗數對穫得高產至關重要,但在保證一定有效穗數的前提下,提高韆粒重也是穫得高產的重要途徑.提齣,在寧夏生態條件下,玉米高產栽培中在保證一定有效穗數的前提下,栽培措施上應以提高韆粒重、選擇中穗型品種、保持一定穗粒數來達到增產的目的.
위료해고산옥미품충산량구성삼인소대산량영향적상대중요성,채용상관급통경분석법,대저하인황관구3개불동류형옥미품충적산량급주요산량성상진행통계분석.결과표명:선옥335、정대12화동단60삼개옥미품충재저하관구관개조건하도구유산량15 000 kg/hm2이상적생산잠력,기중선옥335적고산잠력경대,산량주효최대,기봉산성교호;3개주요성상대산량영향적순서위유효수수>천립중>수립수,결책계수분석현시,유효수수、천립중대산량적종합작용교대,시산량고저적중요결정인소,증가유효수수대획득고산지관중요,단재보증일정유효수수적전제하,제고천립중야시획득고산적중요도경.제출,재저하생태조건하,옥미고산재배중재보증일정유효수수적전제하,재배조시상응이제고천립중、선택중수형품충、보지일정수립수래체도증산적목적.
In order to find the relative importance of the effect of three factors of yield components on the yields of high-yielding maize varieties, a statistics analysis is made on the yields and main yield straits of 3 different types of maize varieties in the Yellow River Irrigation Area of Ningxia by adopting correlation and path analysis method. The results show that 3 maize varieties, namely, Xianyu 335, Zhengda 12 and Dongdan 60, all have the yield potential of 15 000 kg/hm2 under the irrigation condition of Ningxia irrigation area. Among them, Xianyu 335 has a greater high-yielding potential, biggest yield main effect and a good yielding ability. The effects of 3 main straits on the yield can be ranked as follows:effective spike number>1 000 grain weight>grain number per spike. The decision factor analysis shows that the effective spike number and 1 000 grain weight have greater comprehensive effects on the yield and are the important factors determining the yield. It is very important to increase the effective spike number for achieving a high yield. But under the condition of guaranteeing certain effective spike number, to increase 1 000 grain weight is also an important approach for achieving a high yield. It is put forward that under the ecological condition of Ningxia, in the high-yielding cultivation of maize, under the prerequisite of guaranteeing certain effective spike number, the main measures to be taken for achieving yield increase should be to upgrade 1 000 grain weight, select middle spike variety and keep certain spike number.
