【正文快照】： 根区局部灌溉,包括分根区交替灌溉(APRI)和固定部分根区灌溉(FPRI)或称部分根干燥(PRD),是一种作物局部根系受旱时,既能控制蒸腾耗水、满足作物水分需求,又能发挥肥料最大肥效,并提高作物产量和质量...
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通过研究固定根区水分胁迫下氮形态对玉米水分利用的调节与作用机制，为局部根区灌溉水氮高效利用提供理论依据。
Regulation and the mechanisms of nitrogen form on water utilization of maize under fixed partial root-zone water stress conditions were investigated.
要了解在灌溉时灌满根区需要多少水，并据此来制定灌溉施肥计划。
Know how much water is needed to refill the root zone during irrigation and plan fertigation accordingly.
计算结果表明，唐山农业区灌溉施肥引起根区以下硝态氮渗漏损失可造成浅层地下水的污染。
The results indicate that the nitrate-N leakage loss under the root zone caused by fertilizer irrigation could creat the pollution of shallow groundwater in Tangshan agricultural area.
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