不同带宽对套作小麦产量及边际效应的影响  

Effects of Different Bandwidth on the Yield and Border Effect of Relaying Wheat

作　　者：樊高琼[1] 杨文钰[1] 任万军[1] 郑亭[1] 雍太文[1] 王小春[1] 陈明祥[2] 白文进[1] 

机构地区：[1]四川农业大学农学院,四川雅安625014 [2]射洪县农业局,四川射洪629200

出　　处：《四川农业大学学报》2009年第2期133-136,共4页Journal of Sichuan Agricultural University

基　　金：四川省科技富民强县重点项目"丘区射洪县循环经济型现代农业科技集成研究与示范"(编号:07NG001-020);四川主要粮食作物丰产高效技术集成研究与示范;突破性作物新品种高产高效栽培技术研究(2006YZGG-28);四川农业大学青年科技创新基金

摘　　要：以"内麦8号"为材料,单因素随机区组设计,研究"双六零"(带宽4 m)、"双三零"(带宽2 m)、"三五二五"(带宽2 m)、"三零二零"(带宽1.67 m)、"一二二二"(带宽1.13 m)5种不同带宽对小麦产量及边际效应的影响。结果表明,套作小麦有效穗与产量呈极显著正相关,有效穗对产量的直接作用最大,有效穗与小麦播幅呈极显著正相关,同时还受边际效应的影响,边行经济性状在不同带宽间的变异小,而非边行的经济性状较边行显著变劣,中厢带植模式能兼顾穗数和边际效应的发挥而增产,是四川丘陵旱地套作小麦高产高效的适宜种植模式。In this study, single radom-plot design was conducted to study the effect of five different bandwidth including ＂double-60＂ （4 m）, ＂double-30＂ （2 m）, ＂3525＂ （2 m）, ＂3020＂ （1.67 m）, ＂1222＂ （1.13 m） on yield and the border effect of wheat c. v. Nei-mai8. The results showed that the yield of relaying wheat was positively associated with the numbers of available ears significantly, which has made great contributions to the yield. The number of productive ear had positive relation to the sowing width and which was hitted by the border effect at the same time. The spikes per meter, grains per spikes, 1000-grain weight and yield per meter had little variation at the border wheat under different bandwidth, but these characters got too bad in the non-border because of the negative marginal effect. The medium-bandwidth were the better because of it could effectively balance the spikes and the marginal effect than the narrow and the wide bandwidth pattern, it＇s the suitable plant pattern in hilly area of Sichuan.

关 键 词：小麦 套作 带宽 产量 边际效应 

分 类 号：S512[农业科学—作物学]