Finally , it presents the four available means of accruement of water resource in china from analysis of the relations existing between the utilized quantities of water resource and the agricultural climate of the district as expressed in temperature , duration of sunshine and precipitation during the non-frost period .

最后提出增辟我国水资源的4种途径,分析了我国水资源用量和无霜期中气温、日照和降水量等诸农业气候的关系。