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作者	单位
章建新,王中奇, 再尼拉,艾则孜	（1. 新疆农业大学农学院，新疆乌鲁木齐 830052； 2. 和田地区洛浦县农业局，新疆洛浦 848200）

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中文摘要:

为揭示冬小麦预留套行种植模式的增产机理，以新冬20为材料，以不留套行为CK，在大田条件下系统研究了9行麦空5行（9 5）、5行麦空2行（5 2）两种模式冬小麦的生育规律及茎数、叶面积等的边际效应。结果表明，5 2模式的总茎数、叶面积、干物质积累、产量的边际效应为11.3%~36.0%，远低于9 5模式的57.8%~103.0%，但5 2模式各行茎数、叶面积、干物质积累和籽粒产量等性状较CK有明显改善，籽粒产量达到9 968.7 kg·hm^-2，较CK增产11.25%。5 2模式产量结构为穗数679.6万·hm^-2、穗粒数36.79、千粒重40.75 g；最高总茎数达到1 578.7万·hm^-2，成穗率为44.2%，最大叶面积指数6.22，总干物质积累量18 124.9 kg·hm^-2，经济系数0.55。5 2模式各生育时期的茎数、叶面积、干物质积累等边际效应所导致的产量边际效应超补偿了2空行的产量损失，有利于实现冬小麦超高产。

英文摘要:

Under field condition, a systematic study on the developmental regularity and marginal effect of winter wheat was conducted under two prepared row patterns of nine rows of wheat with five preset rows of intercrop (9 5 pattern) and five rows of wheat with two preset rows of intercrop (5 2 pattern), in order to explore the developmental regularity of the super high yield cultivation in prepared row planting pattern of winter wheat, Xindong20 was used as material, and no prepared row was as CK. The results showed that the effects of 5 2 pattern were 11.3%~36.0% on total stem numbers, leaf area, accumulate of dry matter and marginal effect of yield,, which were lower than that of 9 5 pattern (57.8%~103.0%), but the 5 2 pattern was obvious better than CK in stem numbers per line, leaf area, accumulate of dry matter and grains yield. Grains yield of the 5 2 pattern was 9 968.7 kg·hm^-2, which was 11.25% higher than that of CK. Yield components of the 5 2 pattern were as number of spike of 679.6 ten thousand per hm, grains per spike of 36.79, 1000 kernel weight of 40.75 g, tiptop total stem number of 1578.7 per hm, efficient spike rate of 44.2%, the most LAI of 6.22, the total dry matter accumulation of 18 124.9 kg·hm^-2 and economic coefficient of 0.55. The 5 2 pattern was obvious in improving yield than CK and 9 5 pattern, which in favor of realize super high yield for winter wheat.

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