施磷肥对红小豆吸磷及产量的影响  

Effects of phosphate application on phosphorus content and yield of Adsuki bean.

作　　者：赵婷婷[1] 冯光明[2] 刘树欣[2] 

机构地区：[1]中国科学院石家庄农业现代化研究所,石家庄050021 [2]河北农业大学农学院,保定071001

出　　处：《中国生态农业学报》2001年第2期70-71,共2页Chinese Journal of Eco-Agriculture

摘　　要：试验研究了潮土区不同施P肥量对红小豆含P量及产量的影响。结果表明,在土壤有效磷含量为9mg/kg条件下P肥对红小豆增产效果达极显著水平,施纯P 68.8kg/hm^2时产量最高。红小豆全生育期含P量呈单峰曲线,花后10 d左右达最大。结荚鼓粒期及成熟期含P量与产量呈显著正相关关系,相关系数分别为0.9375和0.7863。各生育阶段的适宜含P量始花前为4.0mg/g,始花期至花后20 d为4.4～4.8mg/g,花后20 d后为3.9～3.5mg/g。产量(Y)与吸P量(x)间的关系为二次曲线,其决定系数为0.9823,施P量与吸P量间呈极显著正相关关系,相关系数为0.9644。The experiment was conducted to study the effect of phosphate application on phosphorus absorption and yield of Adsuki bean in fluvo-aquic soil area. The results showed that effect of phosphate on yield was very significant and the maximum yield was obtained when the amount of phosphate application was 68.8kg/hm2. Cor-relation between phosphorus content and yield reached a very significant level, its correlation coefficients were 0. 9375 and 0.7863 respectively during pod-setting and pod-filling stage and ripening stage. During the whole growing period, there was one phosphorus content peak in which about 10 days after flowering reached the maxi-mum. The appropriate phosphorus contents before flower-beginning,flower-beginning to 20 days after blooming, 20 days after blooming later were 4.Omg/g, 4.4- 4.8mg/g, 3.9-3.5mg/g respectively. Relation between the yield and the amount of phosphorus absorption was quadratic equation with 0.9823 determination coefficient. Cor-relation between the amount of phosphate application and amount of phosphorus absorbed reached a significant lev-el and its correlation coefficient was 0. 9644.

关 键 词：红小豆 磷肥 产量 施用量 吸磷量 

分 类 号：S521[农业科学—作物学] S143.2