The main factors affecting the well yield are the transmissivity and water yield coefficient of the aquifer as well as the permeability coefficient and thickness of the leaky layer.
含水层的导水系数、释水系数和弱透水层的渗透系数、厚度是影响井涌水量的两大重要因素。
Drilling fluids is one of the main factors influencing the yield of water well.
钻井冲洗液是影响水井出水量的主要因素之一。
It explored the effect of straw returned to field and deep fertilization in autumn on the growth and yield of dryland corn as well as water use efficiency and soil fertility.
结果证明，秸秆还田秋施肥较好的解决了深施肥与春季保墒促全苗以及秸秆腐解与幼苗争水争肥影响幼苗生长的矛盾，秸秆资源丰富的优势得到充分利用，土壤水肥状况得到明显改善。
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