兰新线黑山湖段铁路防护林地下滴灌灌水量的确定及效益分析  

Determination of Irrigation Quota and Analysis on Water-saving Efficiency of Windbreaks Using Drip-irrigation in Heishanhu Section of Lanxin Railway

作　　者：康才周[1] 王理德[1] 朱淑娟[1] 

机构地区：[1]甘肃省治沙研究所,甘肃武威733000

出　　处：《甘肃林业科技》2006年第1期15-17,45,共4页Journal of Gansu Forestry Science and Technology

摘　　要：通过嘉峪关工务段黑山湖防沙工区铁路防风固沙林二白杨、灌木柳等树种的地下滴灌试验，对其灌水量、水分运动等指标进行了计算与分析，初步确定了合理的灌水量、灌水时间和灌溉周期。试验结果表明：滴灌每次灌溉时间为10h，每公顷防风固沙林带地下滴灌年灌水定额为6135m^3，每次灌溉定额306．75m^3；全年灌水时间分别为4～9月每月灌溉3次，10月下旬灌越冬水1次，灌溉时间为20h。This paper,based on the trials using drip-irrigation on sand-fixation species Populus gansuensis and bush-willow in Heishanhu section of Lanxin railway, analyzed the irrigation quota and water movement of the species, and preliminarily specified the rational irrigation quota, duration and frequency. The results showed： for sand-fixation windbreaks, 10 hours are needed in each irrigation using drip-irrigation, the annual irrigation quota is 6 135 m^3/hm^2 and the irrigation quota for each time is 306.75 m^3. The species should be irrigated from April to September and 3 times in each month. Winter irrigation is in the late of October and it needs lasting 20 hours.

关 键 词：铁路防护林 地下滴灌 灌水定额 效益分析 

分 类 号：S275.6[农业科学—农业水土工程]