９０特（１）增产素对冬小麦的增产效果９０特（１）小麦增产亲自１９９１年在我县推广以来，累计推广面积已达２万多亩，群众普遍反映有一定增产作用，但无准确数据证明，为此，我们进行正规试验。试验于１９９２～１９９３年度在水正乡王沟泉四组王清玉承包地上进行，黑... 90 Special (1) Increasing production of winter wheat by increasing yield 90 Special (1) Increasing output of wheat In 1991, since my promotion in our county, the accumulated promotion area has reached more than 20,000 mu, and the masses generally have some stimulation but no accurate data Prove, for this reason, we conduct a formal test. The experiment was carried out on the ground of Wang Qingyu, a member of four groups of Wanggouquan, Shui Zhengxiang, from 1992 to 1993, with black ...