山地不同树龄枣园土壤水分状况研究  

Study on soil water condition of mountain jujube yards of different growth years

作　　者：辛小桂[1,2] 吴普特[1,2] 汪有科[1,2] 肖森[3] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]中国科学院水利部水土保持研究所,陕西杨凌712100 [3]西北农林科技大学资源与环境学院,陕西杨凌712100

出　　处：《干旱地区农业研究》2012年第3期85-89,共5页Agricultural Research in the Arid Areas

基　　金：国家科技支撑计划项目"西北生态脆弱区经济作物高效用水关键技术研究与示范"(2011BAD29B04)

摘　　要：为研究黄土高原梨枣林地土壤水分状况,利用TRIME管和洛阳铲对灌溉及雨养两种条件下不同种植年限（1 a、4 a、9 a、12 a）的梨枣林0~160 cm、0~700 cm范围深度内土壤水分状况进行监测研究。研究结果显示：随着树龄增长梨枣林地土壤水分储量下降;灌溉梨枣林与雨养梨枣林相比,其主根系层0~160 cm土壤水分储量较高;现有灌溉定额条件下,灌溉梨枣林地根区平均土壤水分满足度仍然相对较低;旱作梨枣林随树龄增大,土壤干层的分布深度和土壤干燥化强度趋于增加。In order to study soil water condition of pear jujube trees in the loess plateau, the soil water in 0 - 160 cm and 0-700 cm ranges in depth for different cultivation years （1 a, 4 a, 9 a, 12 a） of pear jujube trees was monitored by TRIME tubes and Luoyang Spade under irrigated and rain-fed conditions. The results showed that： soil water retention （SWR） of pear jujube trees declined as the growth of age; Compared with that of rain-fed pear jujube trees, the SWR of primary root zone （0- 160 cm） was higher under the condion of irrigation; With the existing irrigation quota, the average satisfying degree of root zone of pear jujube trees to soil water was relatively low under the condition of irrigation; The distribution depth of dried soil layer and soil desiccation intensity tended to increase for rain-fed pear jujube trees with the increase of age.

关 键 词：土壤水分状况 不同树龄枣园 灌溉 雨养 陕北山地 

分 类 号：S665.1[农业科学—果树学]