摘要
[ Objective ] The paper was to investigate the occurrence condition of pear blight rot in pear-producing areas in Qianxian of Shannxi Province, so as to find the main cause of the disease and the effective agents for the disease. [Method] The occurrence condition of pear blight rot was surveyed in field, the inci- dence rate of trees and incidence index of fruits were counted, and the field control test of different agents against pear blight rot was carried out. [ Result] The ma- jor reasons for outbreak of pear blight rot in Ganhe pear-producing areas in Qianxian of Shannxi Province were excessive rainfall and high temperature and humidity in July 2010, poor drainage in orchards and large planting density were also the main factors causing outbreak of pear blight rot. 64% oxadixyl · mancozeb WP, 60% metalaxyl-mancozeb WP and 80% aliette WP had significant control effect on pear blight rot, fruit bagging was also an ideal measure for prevention of the dis- ease. [ Conclusion] Pear production should focus on improving the air and light condition, enhancing the drainage capacity of orchard and promoting bagging culti- vation, and the systemic control agents should be selected to control pear blight rot.
[ Objective ] The paper was to investigate the occurrence condition of pear blight rot in pear-producing areas in Qianxian of Shannxi Province, so as to find the main cause of the disease and the effective agents for the disease. [Method] The occurrence condition of pear blight rot was surveyed in field, the inci- dence rate of trees and incidence index of fruits were counted, and the field control test of different agents against pear blight rot was carried out. [ Result] The ma- jor reasons for outbreak of pear blight rot in Ganhe pear-producing areas in Qianxian of Shannxi Province were excessive rainfall and high temperature and humidity in July 2010, poor drainage in orchards and large planting density were also the main factors causing outbreak of pear blight rot. 64% oxadixyl · mancozeb WP, 60% metalaxyl-mancozeb WP and 80% aliette WP had significant control effect on pear blight rot, fruit bagging was also an ideal measure for prevention of the dis- ease. [ Conclusion] Pear production should focus on improving the air and light condition, enhancing the drainage capacity of orchard and promoting bagging culti- vation, and the systemic control agents should be selected to control pear blight rot.
基金
Supported by Special Funding for Construction of Modern Agricultural Industrial Technology System~~
