我县地处赣北,棉地土壤有效硼含量在0.25～0.38ppm 之间。低于棉花潜在性缺硼临界值0.8ppm,属中度缺硼。1984年我们进行了棉花施硼试验,共设三个处理:(1)不施硼(对照)。(2)土壤追硼加喷硼,即苗期(4叶期)每亩用硼砂0.5斤,兑水400斤,在窄行内滴施,花铃期按每亩0.3斤硼砂,配成0.2％硼砂溶液喷雾。(3)喷硼,在棉花现蕾期,开花期各喷一次0.2％ My county is located in northern Jiangxi, cotton soil available boron content between 0.25 ~ 0.38ppm. Below the cotton potential boron deficiency critical value 0.8ppm, is a moderate boron deficiency. In 1984, we conducted a cotton application of boron, a total of three treatments: (1) no boron (control). (2) Boron and soil boron spraying, that is, seedling stage (4-leaf stage) with 0.5 kg of bismuth per mu, 400 pounds of water, dripping in a narrow row, flower boll stage 0.3 kg per acre borax, dubbed 0.2% Borax solution spray. (3) boron spray, budding in cotton, flowering each spray once 0.2%