low productive soil 中文意思是什麼
low productive soil
解釋
低產土壤- low : adj 1 低的；淺的，矮的。 low flight 低飛。 a low temperature 低溫。 low tide [water] 低潮。 The g...
- productive : adj. 1. 生產的，生產性的；有生產力的；多產的。2. 產生[出產]…的 （of）。adv. -ly ,-ness n.
- soil : n 1 泥土，土壤；土質。2 土地，國土。3 滋生地，溫床。4 農業生活，務農。n 1 臟東西，污物，污穢，污...
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16032 evaluation units of the potential land productivity were overlaid out. by using the mechamism methodology and relative computing models, yaan city ' s land productive potentiality was computed according to synthetic index of land productivity evaluation that was taken as soil effective coefficient. result of research indicated that : ( a ) siol effective coefficient changed from 0. 3047 to 0. 8550, respectively with medium - low yield farmland of 71. 28 percent. ( b ) the division of climate productivibilty is situated on the third degree and fourth class western area in east of chian
4 、雅安市土地自然生產潛力與目前的實際生產水平比較，其增產潛力平均為23 . 53 ，說明農業技術和管理措施等的增產潛力較大；將目前土地的實際生產水平與15年前比較，土地的實際生產水平逐年上升，年均遞增0 . 64 ，顯然，土地的自然生產潛力是可以通過各種農技措施來挖掘的。
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