| 摘要: |
| 本文通过三年的试验资料对曲周综合治理试验区盐渍化农田生态系统不同治理水平(阶段)的生产力进行了研究。结果表明:经过综合治理,盐渍化农田生态系统的盐化生态环境有了根本的改变,土壤肥力明显好转,生产力水平大大提高,经济效益显著。即使上层(0—40cm)土体含盐量在0.6—0.7%(其中硫酸钙占2/3左右)或略高一些的情况下,只要充分发挥人工控制系统的效用,进行合理的水肥和田间管理,在短期内就能获得千斤以上的粮食亩产。 |
| 关键词: 治理水平 曲周 经济效益 盐渍化 实验站 土壤肥力 综合治理 生态系统生产力 生产力水平 农田生态系统 |
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| A STUDY OF THE PRODUCTIVITY OF THE SALTILIZATION FIELD ECOSYSTEM IN QU ZHU CONTY |
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| Abstract: |
| This paper gives the beneficial result of the comprehensive measures of ecological improvement in different stages to resist drought,water- logging and saltilization in the Qu Zhu experimental Station,located in Hepei Province,on the Great North China Plain.The dissertation is as follows. According to the usual behavir of saline water movement in this region,we have devised a system of shallow wells,deep ditches and some other measures.This has been proved to be very effective in improving the salt-affectal... |
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