摘要： 为了解钙与黄冠梨果面花斑病发生的关系，于套袋前用硝酸钙对黄冠梨进行处理，统计花斑病发生率并测定各形态钙的含量。结果表明：硝酸钙处理的果实花斑病发生率降低，其中浸果和叶面喷施与套3层袋对照存在显著性差异，但均显著高于不套袋果实。花后40~80 d，硝酸钙处理后果皮中总钙、水溶性钙含量都高于套3层袋的对照，并且通过浸果方式处理的果实这2种钙的含量明显高于套3层袋的对照。花后90 d至果实成熟，硝酸钙处理的总钙和水溶性钙含量均明显低于不套袋果实。硝酸钙处理能不同程度的增加NaCl溶性钙和HCl溶性钙的含量，但对HAC溶性钙的含量没有显著影响。说明钙处理可增加总钙以及水溶性钙、NaCl溶性钙和HCl溶性钙含量，果实中这些钙浓度的变化与其花斑病发生率的降低有密切关系。

关键词: 梨, 套袋, 钙, 花斑病

Abstract: In order to understudy the relationship between calcium and browning spot,Ca(NO₃)₂ had been used to treat the Huangguan fruit before bagging and the rate of browning spot was counted and Ca compounds were determined.The results indicated that exogenous calcium supply in different treatment decreased the incidence of browning spot,dip fruit and spraying in the leaves of exogenous calcium were significant differences compared withthree layers bag fruits,but all of treatment were significantly higher than without bag fruit.After flower 40-80 d,the total calcium and water-soluble calcium content of calcium treatment fruit were higher than those in three layers bag fruits.At the same time,dip fruit and three layers bag fruits were significant differences.After flower 90 d to fruit maturity,the total calcium and water-soluble calcium content in Ca(NO₃)₂ treatment were lower than without bagfruit.All types of calcium treatment were significantly increase in NaCl-soluble calcium and hydrochloric acid-soluble calcium content,but did not affect the content of acetic acid-soluble calcium.In summary,calcium treatment increased total calcium and water-,NaCl-and hydrochloric acid-soluble calcium,and the changes of these calcium concentrations have closely related with reduction of browning spot.

Key words: Pear, Fruit bagging, Calcium, Browning spot

中图分类号: 

• S143.7