梨保花保果药剂试验初报

摘要

连续两年应用当前常用的激素和微肥进行保花保果试验,结果表明：激素类的GA3、2,4-D、KT-30均能明显提高梨树坐果率,但梨树对2,4-D敏感,生产上对其浓度不易掌握,GA3两种浓度（66.7 mg/kg、200.0 mg/kg）对果实品质影响较大,均不宜推广;KT-30浓度过低（5.0 mg/kg）或过高（20.0 mg/kg）对提高梨坐果率的效果均不理想,10.0 mg/kg效果显著,对树体无不良影响且对果实品质影响小。微肥类的植物动力2003、奥普尔、多微高效复合肥对提高梨坐果率均有一定效果,且有利于提高果实品质和促进树体生长发育,生产上可推广使用。%A continuously two-year reagent test for preserving pear flowers and fruits was conducted by using frequently-used hormones and micro-element fertilizers.The results showed that the hormones such as 2,4-D,GA and KT-30 could improve the fruit setting rate.However,pear trees were sensitive to 2,4-D and it was difficult to handle a suitable concentration in productive process.Two concentrations(66.7 mg/kg and 200.0 mg/kg) of GA have unfavorable effect on fruit quality and were not suitable to be further extended.Both too low(5.0 mg/kg)or too high(20.0 mg/kg) concentrations of KT-30 were not ideal to improve the fruit setting rate.Concentration of 10.0 mg/kg was helpful for the fruit setting rate and has no unhealthy effect on pear plants as well as less effect on fruit quality.Micro-element fertilizers such as Plant Dynamic 2003,OPAL fertilizer and multi-Elements and high efficient compound fertilizer could improve the fruit setting rate in certain degree and be beneficial for improving fruit quality and plant growth.The above micro-element fertilizers could be popularized in the productive practice.