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我们在1973—1978年对种植在石灰性土壤上的棉花进行了锰、钼、锌、硼、铜等各种微量元素的肥效试验,并在万亩棉田上进行了示范推广,现将结果简介如下: 一、试验概况和增产幅度: (一) 试验方法: 1.浸种试验:1973、1974年我们在我省太谷、榆次等科研点上进行试验,主要微量元素为锰(硫酸锰)、钼(钼酸铵)、铜(硫酸铜)、硼(硼酸)等。浸种浓度为0.02—0.1％,浸泡时间12—24小时,以浸水为对照,重复3次。 2.拌种试验:1976—1978年我们在山西农大农场和太谷西的科研点上进行试验,主要微量元素为锰(硫酸锰)、钼(铝酸铵)、硼(硼
In 1973-1978, we tested the fertility of various trace elements such as manganese, molybdenum, zinc, boron, copper and so on cotton planted in calcareous soils, and demonstrated the results on 10,000-mu cotton fields. As follows: First, the test profile and the rate of increase: (a) test methods: 1. Soaking test: 1973, 1974, we Taigu, Yuci and other scientific research points on the test, the main trace elements manganese (manganese sulfate) , Molybdenum (ammonium molybdate), copper (copper sulfate), boron (boric acid) and the like. Seed soaking concentration of 0.02-0.1%, soaking time 12-24 hours, with water as a control, repeated 3 times. 2. Seed dressing test: During 1976-1978, we experimented on the scientific research spots of Shanxi Agricultural University and Taigu West. The main trace elements are manganese (manganese sulfate), molybdenum (ammonium aluminate), boron