红小豆氮磷钾积累与分配规律的研究  

The study on accumulation and partitioning of nitrogen phosphorus and potassium in adsuki bean

作　　者：赵婷婷[1] 冯光明[1] 刘树欣[1] 

机构地区：[1]河北农业大学农学院,河北保定071001

出　　处：《河北农业大学学报》2000年第3期16-19,共4页Journal of Hebei Agricultural University

摘　　要：研究了潮土区红小豆 15 2 4 6 0kg·hm-2 产量水平下氮、磷、钾积累与分配规律。结果表明 ,每生产 10 0kg红小豆籽粒需从土壤中吸收氮 5 2 7kg、磷 0 73kg、钾 2 40kg。红小豆单株干物质积累符合Logistic曲线方程。全生育期植株含氮量最高 ,含钾量次之 ,含磷量最低。氮、磷、钾的积累强度曲线为单峰曲线 ,始花到花后 2 0d为养分积累的高峰期 ,花后 2 0d左右积累强度达到最大。相对积累强度曲线为双峰曲线 ,第一个高峰为苗期至分枝期 ,是氮、磷、钾营养临界期 ;第二个高峰为始花期至花后 2 0d ,是氮、磷、钾营养的最大效率期。整个生育期间 ,叶片与花荚中氮的积累量最多 ,钾次之 ,磷最少 ;叶柄与茎秆中钾的积累量最多 ,氮次之 。The experiment was conducted to study the accumulation and partitioning of dry matter and N,P,K of Adsuki bean when yielded 1 524 60 kg·hm -2 in Chao soil area The results showed that the amount of N,P,K needed for producing 100 kg grain of Adsuki bean was 5 27 kg, 0 73 kg and 2 40 kg, respectively Dry matter accumulation of the whole plant was in accordance with Logistic curve During the whole growing period, N content of the plant was higher than K and P There was one peak of N,P,K uptake rate within twenty days after florescence There were two peaks of relative N,P,K absorption intensity, one of which indicated the critical period of N,P,K requirement from emergence to branching period, and the other indicated the maximum efficient period of N,P,K application during the twenty days after florescence The order of the amount of N,P,K accumulation was N>K>P in leaves and flowers and pods, while in leaf stalks and stems was K>N>P。

关 键 词：红小豆 氮 磷 钾 积累 分配 施肥 

分 类 号：S521.062[农业科学—作物学]