]*>","")" /> A Study of Spatial Distribution Rule of Soil Available Phosphorus in Subsurface Drip Irrigation in Cotton Field of Xinjiang
Xinjiang Agricultural Sciences

• Article • Previous Articles     Next Articles

A Study of Spatial Distribution Rule of Soil Available Phosphorus in Subsurface Drip Irrigation in Cotton Field of Xinjiang

HUANG Yu-fen;JIANG Yi-juan;ZHENG De-ming   

  • Received:2008-03-25 Revised:2008-03-25 Online:2008-03-25 Published:2008-03-25

新疆棉田地下滴灌方式下土壤速效磷空间分布规律的研究

黄玉芬;姜益娟;郑德明   

  1. 塔里木大学植物科技学院,新疆阿拉尔,843300





摘要： 为探讨新疆棉田地下滴灌方式下土壤速效磷空间分布的规律,在棉花不同生育期采用 0.5 mol/L NaHCO3浸提-钼蓝比色法,从水平方向和垂直方向上测定棉田土壤速效磷(Olsen-P).研究分析后认为:垂直方向上,在棉花各生育期土壤速效磷含量的变化呈随着土层深度的增加而减小的趋势;随生育进程的推进,棉田各土层土壤速效磷呈逐渐下降的变化趋势 ;水平方向上,棉田各土层土壤速效磷的变化呈随着与滴灌带距离的增大而缓慢增加的趋势;随棉花生育进程的推进,水平方向土壤速效磷变化为逐渐减少的趋势.