棉花花铃期氯化胆碱-BF1组合调节产量性状的时空效应研究

Regulating Effect to Yield Characteristics of Cotton with Spraing Combined Choline Chloride-BF_1 During Boll-setting

试验于2002年和2005年在南京农业大学江浦试验站进行,研究氯化胆碱单一组合及与多利来(BF1)复配组合对棉花产量性状调节的时空效应。结果显示,花铃期常规施用DPC条件下,于初花期和花后15d两次单一CC处理显著提高各部位单铃子棉重,但铃数不增加;CC-BF1复配组合初花期BF1处理、花后15dCC处理(BC)或CC-BF1混合处理(BBC),显示极显著提高全株外围和中下部内围单铃子棉重的调节效应,BBC处理可稳定维持花铃期各部位的成铃增长效应,BC处理主要维持中下部即伏桃和早秋桃的成铃增长效应。提出CC处理对以增加铃重为目标管理的适宜性和CC-BF1复配组合对以提高铃重和增加成铃双重目标管理的适宜性。

The experiment was carried out in Jiangpu Experiment Station of Nanjing Agriculture University in 2002 and 2005, to study regulating effect of yield characteristics of cotton with spraying choline chloride or BF1 during boll-setting . The boll weight of seedcotton in different position was increased with CC（CC＋CC） treatment, BC（BF1＋CC） treatment and BBC（BF1＋BF1 and CC） treatment. The bolls-setting was increased in different position with BBC treatment, but BC treatment, it was increased to bolls-setting in 1-2 nodes of 1-9 branches and nodes besides 1-2 nodes of 1-4 branches, including those bolls setting in hot days and a few early autumn days. It was obvious that CC treatment is suitable to the regulating objective heavy-producing in increasing the boll weight of seedcotton produced, BC and BBC treatment are suitable to the regulating objective heavy-producing in increasing both boll weight of seedcotton produced and number of boll during boll-setting.