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采用2种脱叶剂,设置不同的用量处理,研究化学脱叶催熟剂对早熟陆地棉新陆早51号脱叶率、吐絮率、产量和纤维品质的影响。喷施2种脱叶剂18d后,脱吐隆3个剂量处理的脱叶率差异极显著,处理A[脱吐隆+乙烯利(150g+1 800mL/hm2)]要显著低于处理B[脱吐隆+乙烯利(225g+1 800mL/hm2)]和C[脱吐隆+乙烯利(300g+1 800mL/hm2)];80%瑞脱隆3个剂量处理的脱叶率差异不显著,均在95%左右。不同处理的2种药剂对单铃重、产量和纤维品质影响不显著。从试验结果和成本效益考虑,新陆早51号施用脱吐隆225g+乙烯利1 800mL/hm2或80%瑞脱隆300g+乙烯利1 800mL/hm2较为经济。
The effects of chemical defoliation ripening agent on the defoliation rate, boll opening rate, yield and fiber quality of early maturing upland cotton, Xinluzao 51, were studied using two kinds of defoliants and different dosage treatments. After two kinds of defoliants were sprayed for 18 days, the rate of defoliation of the three doses of decalination was significantly different, and the treatment A [decalin + ethephon (150g + 1 800mL / hm2)] was significantly lower than that of the treatment B [ (225g + 1 800mL / hm2)] and C [strontium + ethephon (300g + 1 800mL / hm2)]. There was no significant difference in the defoliation rates of the three doses of 80% , Are about 95%. The effects of two treatments with different treatments on boll weight, yield and fiber quality were insignificant. From the test results and cost-effectiveness considerations, the new landfirst early 51 Tu Tiaolong 225g ethephon 1800ml / hm2 or 80% Rhododendron 300g + ethephon 1800ml / hm2 more economical.