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为提高干旱、半干旱缺水地区水稻栽培效益 ,1998～ 1999年在江苏省东海县进行了覆膜旱管水稻栽培试验与示范。覆膜旱管条件下水稻单株分蘖数、叶面积指数和地上部干重等都显著大于不覆膜旱管水稻 ,产量构成因素更趋协调 ,从而缓解了水份对植株的胁迫程度。与露地栽培旱作物 (如陆稻、玉米 )相比 ,单位面积产量提高 14.3 %～ 3 9.8% ,产值增加 2 4 .5%～ 4 2 .9% ,可以示范推广。
In order to improve the efficiency of rice cultivation in arid and semi-arid and water-deficient areas, cultivation experiments and demonstration of dry-mulched rice were carried out in Donghai County, Jiangsu Province from 1998 to 1999. Under dry film mulching conditions, the tiller number per plant, the leaf area index and dry weight of shoots were significantly greater than those of non-mulched dry-pipe rice, and the yield components were more coordinated, thus alleviating the degree of water stress on the plants. Compared with open field cultivation of dry crops (such as Upland rice, maize), the yield per unit area increased by 14.3% -3.8% and the output value increased by 24.5% -4.29%, which could be demonstrated and promoted.