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为了减少棉花蕾铃脱落,提高产量,79年我们做了棉花清棵炼苗试验,取得初步成效,结果如下: 一、试验方法品种沪棉204,播种期4月25日。6月30日,在株高27.9厘米,真叶7.2张,现蕾1.5～2个时,清棵炼苗。将棉花茎基部位土壤轻轻扒去3～4厘米,根部露土2～3厘米,不伤根,直至施当家肥后再培土复平。其它栽培管理措施同大田。二、试验结果 8月8日(立秋)考察:经过清棵炼苗的植株老健,杆硬叶挺,叶色深绿,红茎比例适中。7月23日打顶后,末塔果枝斜直上升18.4厘米,植株赘芽少而小,单枝结铃4～5个,果枝距短,地下侧根系
In order to reduce the loss of cotton buds and improve the yield, in 79 years we did a clear-cut cotton experiment, and achieved initial results, the results are as follows: First, the test method varieties Hu cotton 204, sowing April 25. June 30, at the plant height of 27.9 cm, true leaves 7.2, bud 1.5 to 2, Qingchan hardened. The base of the cotton stalks gently soil stripped to 3 to 4 cm, 2 to 3 cm root of exposed soil, do not hurt the root, and then apply fertilizer and then soil fertilizers. Other cultivation management measures with the field. Second, the test results August 8 (Liqiu) inspected: After clearing the body hardening plant elders, rod stiff, leaf dark green, moderate proportion of red stems. July 23 after the top, fruiting branches of the end tower straight up 18.4 cm, plant buds small but small, 4-5 single branch bell, fruiting branches away from the short, underground side of the root system