安梨为三倍体品种,花粉败育率高,而且花期极易遭受霜冻危害,致使其座果率降低,产量难以得到保障。近年来,随着“920”在安梨上的应用,已使得安梨座果状况有了明显改善,产量有了大辐度提高。但是,由于“920”是激素类药物,应用不当时很易引起树体的不良反应。为了避免这类现象的发生,现将使用“920”应注意的事项总结如下,供作参考。 An pear is a triploid variety with high rate of pollen abortion. Moreover, the flowering period is highly vulnerable to frost damage, resulting in a decrease of fruit set rate and difficulty in ensuring yield. In recent years, with the application of “920” on An Pear, the condition of Pear has been remarkably improved and the yield has been greatly increased. However, due to the “920” is a hormone drugs, improper application is very easy to cause adverse reactions to the tree. In order to avoid such phenomena, the use of “920” should be noted Matters summarized below are for reference.