旱作豌豆生长和营养规律的研究

The Study on Regularity of the Growth and Nutrient Nutrition of Pea under Rainfed Condition

本文在田间，利用分期取样研究了旱作条件下豌豆地上部与根系干物质消长规律和Ｎ、Ｐ、Ｋ养分含量变化规律．结果表明，豌豆地上部和全株干物质的增长符合Ｌｏｇｉｓｔｉｃ生长曲线，而根干重呈抛物线的变化规律．地上和根系的Ｎ、Ｐ、Ｋ含量均呈随生育期推进而逐渐降低的变化趋势．

The law of the growth of root and shoot and variations of N,P,K content with growing time of dryland pea were studied under field condition.The results showed that the change of the above-ground dry matte with growing time could be simulated by Logistic Equation,but that of the root could be described by a quadratic equation.N,P,K concentration in the root and shoot were decreased gradually with growing time.