摘要： 经多年研究,已明确中国梨木虱对梨树的为害分直接为害和间接为害,后者远远大于前者。梨木虱分泌物是链格孢菌和枝孢菌等霉菌的很好的培养基质,在空气相对湿度超过60%以上时,霉菌就在存有分泌物及其残留物的叶片、枝条或果实上附生,生长发育,并产生AA毒素,在霉菌及其毒素的共同作用下,造成梨木虱对梨树的间接危害,使梨叶形成被害斑,进而造成早期落叶,果实形成病斑,进而腐烂。
关键词:
中国梨木虱,
分泌物,
霉菌,
相对湿度,
直接和间接危害
Abstract: Studies were conducted for years.Results showed that the damage of the Pyslla chinensis to the pear trees included direct and indirect damage.The latter was more sever than the former.The secretion of Pyslla chinensis was good culture medium for Alternaria alternata and Cladosporium spp.Mildew began to grow,develop and produce toxic substance on the leaves,branches and fruits with the secretion and its residue when the relative humidity of the air reached over 60%.Under the exist of the mildew and the toxic substance,the pear trees were damaged by the Pyslla chinensis, which resulted in the damage spots on the leaves,the early fruit drooping,damage spots on the fruits and fruit rotting.
Key words:
Pyslla chinensis,
Secretion,
Mildew,
Relative humidity,
Direct and indirect damage
中图分类号:
张翠疃, 徐国良, 王鹏, 郑晓莲, 张军娥, 张迎然. 中国梨木虱危害规律的研究[J]. 华北农学报, 2002, 17(S1): 17-22. doi: 10.3321/j.issn:1000-7091.2002.z1.004.
ZHANG Cui-tuan, XU Guo-liang, WANG Peng, ZHENG Xiao-lian, ZHANG Jun-e, ZHANG Ying-ran. Study on the Damage of Rules of Pyslla chinensis[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2002, 17(S1): 17-22. doi: 10.3321/j.issn:1000-7091.2002.z1.004.