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试验于2004年采用框栽法,以垦农4号为材料研究了不同氮肥施用量对大豆叶面积指数、干物质积累、分配及产量的影响。结果表明:与N0相比,施用氮肥提高了大豆的叶面积指数,增大了大豆全生育期的干物质积累量。适宜的施氮量(22.5～457.1kg/hm2)和高氮处理(1435.4kg/hm2)在大豆生育后期能协调植株各部分干物质的分配,对大豆有增产作用;高氮处理(946.3kg/hm2)促使植株茎、叶干物质量在生育后期积累过多,而干物质向荚的分配率低,造成减产。
Abstract：The effect of different nitrogen fertilizer level on the changing trends of plan about the height, leaf area index(LAI), dry matter accumulation, distribution and yield of Kennong4 were studied in this experiment. The results showed that Nitrogen fertilizer could increase the LAI and the accumulation of dry matter of whole growing-stage in contrast to N0. appropriate nitrogen levels(22.5～457.1 kg/hm2) .The high level of nitrogen(1435.4 kg/ hm2) could harmonize the dry matter outputting to every organ of soybean after pudding, and increase yield. The high level of nitrogen(946.3 kg/hm2) could accumulate more dry matter before maturation, which led to the unharmonious correlation between the storeroom and source, decline the dry matter outputting to seed, decrease the soybean yield.
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基本信息:
中图分类号:S565.1
引用信息:
[1]才艳,郑殿峰,冯乃杰,等.氮肥施用量对大豆生长动态及干物质积累的影响[J].黑龙江八一农垦大学学报,2007,No.79(02):13-16.
基金信息:
黑龙江省研究生科研创新资金项目(YJSCX2005-14HLJ)。