摘要
通过研究毛乌素沙地地埋滴灌不同参数对紫花苜蓿生长指标的影响,确定最优的滴灌带埋深和灌水定额,进行了不同滴灌带埋深、不同的灌水定额对紫花苜蓿株高和产量的影响试验,得出滴灌带埋深20cm时相同灌水定额的紫花苜蓿的株高高于埋深10和30cm;灌水定额30mm滴灌带相同埋深处株高高于灌水定额15和22.5mm时的株高。滴灌带的埋深对紫花苜蓿的产量影响不大,埋深20cm处最高比10cm最低仅高产5.8%;灌水定额对产量影响较大,22.5比15mm增产30.4%,30比22.5mm增产18.4%。由此建议毛乌素沙地地埋滴灌滴灌带埋深应为20cm,灌水定额为22.5mm,在节水的同时达到增产的效果,有助于该地区水资源可持续利用。
To study how much of an effect the buried drip irrigation parameters of Mu Us desert has on the alfalfa＇s growth indexes and to ensure the optimal burial depths of drip tape and irrigation quota. The different depths and different irrigation quota on alfalfa plant height and yield effect test, found that the depths of 20 cm when the same irrigation quota of alfalfa higher than the burial depth of 10 and 30 cm. When the irrigation quota is 30 ram, the plant height of the burial depth of drip tape is higher than that of 15 and 22. 5 ram of the irrigation quota. The burial depth of irrigation has no much impact on alfalfa yield. When the buried depth is 20 cm, the yield is 5.8% higher than that of 10 cm. But the irrigation quota has great effect on the yield of 22. 5 ram. When the irrigation quota is 30 mm,ifs yield is 18. 4% higher than that of 22. 5 mm of irrigation quota. So we suggest burial depth of drip tape of Mu Us desert should be about 20 cm and the irrigation quota be about 22.5 mm. And we can save water and reach the effect of increasing yield as well, through which we can ensure the sustainable utilization of the water resource in this area.
出处
《节水灌溉》
北大核心
2016年第8期113-116,121,共5页
Water Saving Irrigation
基金
水利部科技推广计划项目(TG1401)
内蒙古自治区新增"四个千万亩"节水灌溉工程科技支撑项目(20121036)
关键词
地埋滴灌
埋深
灌水定额
株高
产量
Subsurface drip irrigation
Burying depth
Irrigating water quota
Plant height
Yield
