干旱地区农业研究Issue(6)：15-21,33,8.
南疆灌区冬小麦／夏玉米改良模式增产潜力与机理分析
Yield potential and mechanism analysis for the improved cropping system of winter wheat and summer corn within the oasis irrigation region of South Xinjiang
摘要
Abstract
Under field conditions,two inter-planting patterns,‘522 pattern’and‘952 pattern’,of Xindong20 and Shenyu2002 were compared,and Baomai10 and Liyu35,Baomai10 and Denghai3672,Xindong20 and Liyu35,were compared with‘521 inter-planting pattern’mainly for the yield,leaf area,photosynthetic potential and dry matter accu-mulation.The results showed that the annual yield was increased for the ‘522 pattern’(17 838.2 kg·hm-2)of Xin-dong20 and Shenyu2002 by 7 .8%,as compared with the‘952 pattern’(yield 16 550 .9 kg·hm-2).For winter wheat, the yield increased by 18 .4%.The annualproduction of‘521 pattern’of Baomai10 and Liyu35,Baomai10 and Deng-hai3672,Xindong20 and Liyu35 were 19 905 .0~20 75 1 .0 kg·hm-2,while for winter wheat yield were 9 740~10 275 kg·hm-2,and corn yield were 9 630 kg·hm-2~10 21 1 .0 kg·hm-2 .Leaf area index of winter wheat were 6 .0 and 5 .0 at booting and flowering stage,respectively .The photosynthetic potential ranged from 290 .2 ×104·m2·d·hm-2 to 324 .3 ×104·m2·d·hm-2 between turning green and mature stage .The growth stage of summer corn was 1 1 1 days,the leaf area index maintained at four from large bell stage to grain filling stage,while that of photosynthetic potential was 233 .1 ×104·m2·d·hm-2~257 .5 ×104·m2·d·hm-2 .the total photosynthetic potential of wheat and corn was 523 .3 ×104· m2·d·hm-2 and 581 .8 ×104·m2·d·hm-2,respectively.Total dry matter was 38 569 .1 ~40 487 .0 kg·hm-2 . Marginal effect of winter-wheat yield was 85 .7%~1 12 .9%.521 pattern of winter-wheat was outperform than‘952 pat-tern’because of it increased rows and boundary rows and boundary yield which led to marginal effect .Meanwhile,sum-mer corn was planted at fifteen days after before wheat harvest,therefore extending growth period to nearly 1 10 days .In conclusion,the‘521 pattern’has advantages of marginal compensation and growth period extension over the ‘952 pat-tern’.关键词
冬小麦/夏玉米/“521模式”/超高产/边际效应/干物质积累Key words
Winter wheat/summer corn/‘521 pattern’/super-high-yield/marginal effect/dry matter accumulation分类
农业科技引用本文复制引用
章建新,赵明,图尔贡,卡地尔亚..南疆灌区冬小麦／夏玉米改良模式增产潜力与机理分析[J].干旱地区农业研究,2013,(6):15-21,33,8.基金项目
“十一五”国家科技支撑计划项目（2009BADA4B01-1）资助 （）
