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荒漠绿洲(碱化土壤)农田生态系统生产力及其调控
Authors
中国科学院新疆生态与地理研究所
Publication date
1 January 2004
Publisher
Abstract
通过试验,科学的论证了只有培肥地力来改善土壤养分贮存库,才能促进荒漠绿洲农田生态系统的主要功能-良性养分循环。(1)建议干旱区应以水利和地力建设为中心,通过人为调控绿洲农田生态系统水分和养分的良性循环;(2)有关植物-碱化土壤生态系统养分循环方面的系统总结;(3)扩大林草面积增加绿色植被覆盖度,可以收到改变绿洲农田小气候和生物改良盐碱土等中低产土的效果。同时草业发展了可以保证农区畜牧业发展,使山区天然草场休养生息,得以自然恢复,使新疆干旱区山区“湿岛”涵养水源效应增强,协调好山盆关系,才能有效遏制荒漠化发展。有机物投入增加了,可以加速培肥地力,再加上推行节水技术,都可以减少土面无效蒸发,提高作物有效蒸散,达到荒漠绿洲农田生态系统生产力与生态环境协调发展
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Last time updated on 29/11/2016