ZHANG Qi.Characteristics of Dry Matter Accumulation and N P K Absorption of Soybean Shangdou 6[J].Soybean Science,2013,32(03):381-384.[doi:10.11861/j.issn.1000-9841.2013.03.0381]
商豆6号干物质积累和氮磷钾吸收特点的研究
- Title:
- Characteristics of Dry Matter Accumulation and N P K Absorption of Soybean Shangdou 6
- 分类号:
- S565.1
- 文献标志码:
- A
- 摘要:
- 以商豆6号为研究对象，探讨了高产夏大豆品种干物质积累和氮磷钾吸收特点。结果表明：在3 784.5 kg·hm-2 产量水平下，商豆6号干物质积累以结荚～鼓粒期最快，占总积累量的53.68%，日均生长量450.55 kg·hm-2;结荚～鼓粒期氮、磷、钾吸收量最多，分别占总吸收量的47.27%、43.98%和46.54%;每生产100 kg籽粒，需要吸收N 8.25 kg、P2O5 1.97 kg、K2O 4.24 kg。综合分析，商豆6号高产应特别注意营养生长期肥料的配施，磷钾肥要集中基施，始花期追施氮肥，中后期喷施叶面肥。
- Abstract:
- In this paper,dry matter accumulation and N P K uptake of Shangdou 6 were studied.The results showed that,under the yield level of 3 784.5 kg·ha-1,most dry matter,accounting for 53.68% of total,were accumulated from podding to seed filling,with average daily increasing rate of 450.55 kg·ha-1.The most amount of N, P2O5 and K2O were absorbed between podding and seed filling,accounting for 47.27%,43.98% and 46.54% of total,respectively.The production of 100 kg soybean seeds need 8.06 kg N,1.97 kg P2O5 and 4.18 kg K2O.So the combined application of N P K fertilizers,with P and K as centralized base fertilizer,N topdressed in the beginning of flowering and sprayed foliar fertilizer at seed filling were necessary for high yield of Shangdou 6.This study provided a theoretical basis for the rational fertilization for highyield cultivation of summer soybean.
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