青海省旱作农田土壤主要物理性状及其持水特性研究

Research on Arid Soil's Major Physical Properties and Water Retention character in Qinghai Province

旱作农田土壤是我省主要耕作土壤之一 ,大多存在保水性不佳的问题 ,本文从土壤的主要物理性质出发 ,对土壤持水能力作一探讨。结果表明 :从各土类粒级组成和孔性结构相比较 ,栗钙土、灰钙土、黑钙土三种旱作土壤均具有良好的通气性 ,前两者略优于后者 ;从土壤水分物理特征分析 ,灰钙土。

Arid soil is one of the main arable soil in Qinghai There is a question on water retention ability low.The paper approaches water retention performance from soil's chief physical properties.The results indicates,castanozems,sierozem and chernozems all possess the good soil aeration.Furthermore,castanozems sierozem and chernozems are better.After analysed soil's moisture physical properties,we can draw a conclusion that soils retention ability are good in castnaozems sierozem chernozems. \ \