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在青龙安家留茬免耕稻麦连作青龙满族自治县肖营子镇温杖子村，是个两茬不足一茬有余的一年一作区。１９９０～１９９４年在农业技术人员指导下，试种了“留茬免耕稻麦连作“示范田，获得上茬小麦平均亩产３４８公斤，下茬水稻亩产４４２公斤，两茬总产７９０公斤的好收成...
In the Qinglong home stubble without rice and wheat even for the Qinglong Manchu Autonomous County town of Xiaoyingzi Wen Zizi village, is a deficit of more than two crops a year for a district. From 1990 to 1994, under the guidance of agricultural technicians, we tried out the “stubble-free and non-tillage rice-wheat continuous cropping” demonstration farm and obtained the average yield of wheat of 348 kg on the previous crop, 442 kg of rice under the continuous cropping and 790 kg of the two crop Good harvest ...