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1987年在江苏大丰,试验摘除棉株基部1—3、1—5、1—7台果枝,40天后调查,果枝数分别为13.09、11.45和10.37,而对照为14.95;8月中旬铃病调查,相对防效为26.7％,57.2％和86.11％。回归分析表明,每株平均约摘除3台果枝时,可获得最高期望值产量。1988年,在江苏省的5个试点上,统一摘除基部3台果枝,42天后,果枝数与对照差异减少至1.64台,果节数几乎不减,而脱落率降低5.28％,单株成铃数超过对照,且提高了售棉等级,铃病防效达57％以上,效益显著。若结合药剂防治,防病增产效果尤佳。
In 1987, Dafeng, Jiangsu Province, the removal of cotton plant base 1-3, 1-5, 1-7 sets of branches, 40 days after the investigation, the number of fruit branches were 13.09,11.45 and 10.37, while the control was 14.95; Survey, the relative control effect was 26.7%, 57.2% and 86.11%. Regression analysis showed that the average expected yield per plant was approximately 3 logs per plant. In 1988, three fruit branches at the base were collectively removed at five pilot sites in Jiangsu Province. After 42 days, the difference between the number of fruit branches and the control was reduced to 1.64 units, with almost no reduction in the number of fruit nodes and a decrease of 5.28% in shedding rate More than the number of control, and increased the sale of cotton grade, bell disease prevention effect of more than 57%, significant benefit. If combined with pharmaceutical control, disease prevention and yield increase effect is particularly good.