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黑龙港大洼地区土质比较粘重,在无水、无肥早作条件下,耕作管理粗放,产量很低。近年来对这类土地的耕作技术逐渐由耕翻耙压变为以耙代耕。新的耕作技术与惯用的耕翻耙压相比,不仅投工少、耗能低,而且具有比较明显的增产效果。根据近年来的对比试验和大田考查,冬小麦平均增产19.5%(变幅7—30.7%以下同),春高粱增产6.7%(5—8%),夏玉米增产13.2%(7—21%),大豆增产8.7%(5—11%),向日葵增产11.1%(8—15%)。
Heilongjiang Dawa area soil more sticky, in the anhydrous, no fertilizer early conditions, extensive farming management, production is very low. In recent years, the cultivation techniques of this kind of land have been gradually changed from farming to raking. Compared with the conventional tillage and harrowing pressure, the new tillage technology not only lowers labor but also low energy consumption, and has obvious yield increase effects. According to the comparative experiments in recent years and field tests, the average yield of winter wheat increased by 19.5% (amplitude of 7-30.7% or less), that of spring sorghum increased by 6.7% (5-8%), that of summer maize increased by 13.2% (7-21%), Soybean yield 8.7% (5-11%), sunflower yield 11.1% (8-15%).