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shi ying shi chang jing ji , fa zhan han di shui dao sheng chan
Author(s): 
Pages: 3-7
Year: Issue:  4
Journal: Reclaiming and Rice Cultivation

Keyword:  水稻旱育稀植水稻生产寒地盐渍土提高产量优质品种超稀植栽培经济效益松嫩平原种稻;
Abstract: <正> 位于我国最北部的黑龙江省新兴寒地稻作区,1949年水稻面积为186万亩,1958年496万亩,1963年回落到225万亩,1974年为216万亩,呈现大上大下、徘徊不前的局面。进入八十年代,由于农村实行家庭联产承包制,并推广水稻旱育稀植新技术,使水稻单产和经济效益得到大幅
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