黄冠梨鸡爪病发生原因调查

A Preliminary Study on the Causes of " Jizhua" Disease on Huangguan Pear

黄冠梨属中早熟梨良种,具有成熟期早、外形美观、品质优良、抗黑星病等优良特性,推广前景广阔,但近些年套袋果发生致命病害鸡爪病。通过对套袋果与非套袋果、不同土壤质地、降雨与否、树势强弱、是否使用膨大素、密植与稀植园、树冠及果实不同部位、不同贮藏运输环境条件等发病情况进行初步调查,并进行了病皮切片观察和病健果表皮营养成分测定、分析,得出了初步结论,提出了“鸡爪病”预防的初步建议。

＂Huangguan pear＂ is a variety of pear with characteristics of maturiation early, good shape and quality of fruit, venturiaresistance, etc. But its fruits were heavily infected by the disease named ＂Jizhua＂ when covered with fruit peal. In this article, some pathogenic inducing factors including bagging, soil, rain, growth regulator, orchard density, fruit location in the crown were investigated related to the disease occurrence, and the possible prevention methods to this disease were also suggested.