田间试验系统地比较了新冬20/沈玉2002不同套种模式（“522模式”与“952模式”）及“521模式”下保麦10号/蠡玉35、保麦10号/登海3672、新冬20/蠡玉35的产量、叶面积指数、光合势及干物质积累等性状的差异。结果表明，“522模式”新冬20/沈玉2002周年产量（17838．2 kg·hm-2）较“952模式”（16550．9 kg·hm-2）增产7．8％，其中，冬小麦增产18．4％。“521模式”保麦10号/蠡玉35、保麦10号/登海3672、新冬20/蠡玉35周年产量为19905．0～20751．0 kg·hm-2，其中，冬小麦产量为9740～10275 kg·hm-2、夏玉米产量为9630～10211．0 kg·hm-2；冬小麦孕穗期和开花期叶面积指数分别为6．0、5．0左右，返青至成熟的总光合势290．2～324．3×104·m2·d·hm-2；夏玉米生育期111 d，大喇叭口期至吐丝后20 d的叶面积指数均保持在4左右，生育期间总光合势233．1～257．5×104·m2·d·hm-2，冬小麦和玉米总光合势为523．3～581．8×104·m2·d·hm-2；总干物质量38569．1～40487．0 kg· hm-2；冬小麦产量的边际效应为85．7％～112．9％。“521模式”比“952模式”大幅度增产，是小麦行数和边行数及边际产量增大的结果，并将夏玉米播期提至麦收前15 d左右，延长玉米生育期（达110 d左右），优化株行配置使玉米增产显著，实现全年超高产。“521模式”同时充分利用了冬小麦边际补偿效应和玉米时间补偿效应，较“952模式”易获得周年超高产。并对超高产栽培技术进行了讨论。%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’.
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