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大豆科学  2015 

滴水量对中熟大豆超高产田干物质积累和产量的影响

DOI: 10.11861/j.issn.1000-9841.2015.01.0060, PP. 60-64

Keywords: 大豆,中熟超高产,滴水量,干物质积累

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Abstract:

为探明超高产大豆的干物质积累和需水规律。田间研究了975(W1),1575(W2),2175(W3),2775(W4)m3?hm-2共4种滴水量处理对中熟大豆品系10-4叶面积指数分布、干物质积累分配和产量的影响。结果表明:随着滴水量的增加,明显提高开花至成熟期间0~100cm土层的含水量;增大主茎6~15节叶面积、群体中上部叶面积指数和群体光合势;显著增加总干物质积累量,W4和W3处理总干物质积累量分别较W?1增加了44.8%和34.7%;增加植株6~16节位荚数、腔数和粒数,显著增加产量,W4和W3处理产量分别为6404.7和6082.6kg?hm-2,分别较W1增产27.6%和21.2%。新疆伊宁地区大豆获得6000.0kg?hm-2产量,其生育期间田间适宜总滴水量为2175~2775m3?hm-2,最大叶面积指数5.15~5.46,总干物质积累量13500.0~14514.0kg?hm-2,经济系数为0.39。

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