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为了进一步提高单位面积产量,我们在1972年搞了夏播杂交高粱与大豆间作试验,取得了一定的增产效果。现将试验结果介绍如下: 前茬小麦收后,浅耕5寸,每亩施杂粪30担,氮、磷、钾复合肥料20斤,过磷酸钙30斤作基肥。大豆于6月20日播种,间苗、锄地各一次。高粱于6月27日播种,四叶间苗,六叶定苗,中耕锄草三次,培土一次。苗期每亩追施碳酸氢铵和尿素各10斤,穗肥每亩施尿素10斤、碳酸氢铵15斤。生长期间用乐果乳剂防治蚜虫二次,用颗粒剂和二二三乳
In order to further improve yield per unit area, we conducted summer intercropping sorghum and soybean intercropping experiment in 1972, and achieved some yield increase. Now the test results are introduced as follows: before harvesting wheat, shallow 5-inch plow, 30 acres of manure per person, nitrogen, phosphorus and potassium compound fertilizer 20 pounds, superphosphate 30 pounds as a base fertilizer. Soybean sown on June 20, between seedlings, hoe each time. Sorghum sown on June 27, four-leaf Miao, six-leaf Dingmiao, tillage weeding three times, earth once. Seedling per acre topdressing ammonium bicarbonate and urea 10 kg, spike fertilizer urea per acre 10 kg, 15 kg of ammonium bicarbonate. During the growth with dimethoate emulsion control aphids second, with granules and two hundred twenty-three milk