Limited water deficient benefit assimilate transporting to seeds.

有限度的水分亏缺,有利于同化物向籽粒调运.

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The spatial variability of regional water requirement ( WR ) and water deficient ratio ( WRD ) are studied with geostatistics.

应用地统计学方法研究区域 需水量 和缺水率的空间变异性.

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Investment in the water improvement project in water - deficient areas totaled 31 billion yuan between 1993 - 99.

1993-1999年全国缺水地区改水累计投资达310亿元.

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