1) negative pressure irrigation
负水头灌溉
1.
Based on the principle of negative pressure,the negative pressure water supplying,controlling pot device and negative pressure irrigation system de- signed for solve this problem,the experiment result showed that the negative pressure water supplying,controlling po.
基于负压控制原理研制出的负水头供水控水盆栽装置和负水头灌溉系统解决了这一难题,试验证明负水头供水控水盆栽装置可将土壤含水量持续维持在理想状态。
2) negative pressure irrigation technique
负水头灌溉技术
3) irrigating head
灌溉水头
4) negatively pressurized irrigation(NPI)
负压灌溉
5) irrigation and drainage
灌溉排水
1.
Considering the current status of irrigation and drainage systems in China,the W.
结合我国灌溉排水系统的实际情况对该系统进行了改造,并在广西桂林开展了试验研究。
6) reclaimed water irrigation
中水灌溉
1.
Elementary reflection is that the effect of the well water irrigation and reclaimed water irrigation to the heavy metals accumulation in plant is lest.
通过对邯郸市5种水质灌区的作物中重金属含量测定,结果发现:中水灌溉和井水灌溉对重金属在作物中积累影响最小,无论何种水质灌溉,4种重金属在作物中积累趋势为Zn>Pb>Cu>Cd,分布趋势基本为根大于茎和籽粒,作物体内铅和镉含量超标。
2.
Based on the experiment studies,the study on water and solute transport in sandy soil under reclaimed water irrigation was made,The result can give some reference for the effect on soil solute transport and soil environment under micro-contaminated water irrigation.
以宁夏回族自治区大武口市森林公园的含砾砂土为研究对象,通过室内试验,对中水灌溉条件下砂砾质土壤在不同灌水量、多次连续灌水、降雨淋洗等不同来水条件下水分、污染物运移的规律进行了初步的研究,为微污染水用于绿化灌溉对砂砾质土壤中污染物运移及累积的研究提供科学依据。
补充资料：负负
1.犹言惭愧﹑惭愧;对不起﹑对不起。
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参考词条