灌溉定额
The irrigation norm for the highest benefits is related closely to water production function, cotton price, water charge, other production costs, and the way of collecting water charge.
节水经济灌溉定额不仅与棉花水分生产函数有关,而且与皮棉价格、单方水价格、生产要素不变费用及水费征收方式有关。
The result indicates that there are obvious differences between irrigation with spate and clear water in large irrigation norm.
研究结果表明,在大灌水定额下,清、洪水灌溉差异明显。
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