A preliminary study on main control technology and application of kiwifruit bacterial canker disease in Sichuan Province
Kiwifruit is one of the significant economic crops in Sichuan Province and China.The disease had caused a serious threat to the kiwifruit industry in the various areas by Pseudomonas syringae pv.actinidiae(Psa)in Sichuan.The purpose of this study was to find out the main technical measures and their application effects to control kiwifruit bacterial canker disease through field surveys and questionnaires in Sichuan Province.The results showed that there were ten control measures for kiwifruit bacterial canker disease in Sichuan,but only three were effective.They were disease-resistant utilization(cultivating disease-resistant varieties),the"two before and two after"key prevention and control technique,and green prevention-control technique.Cultivating disease-resistant variety had been widely applied,with an average annual control cost of 1,000 yuan per 667 m2.The control efficacy and economic gains differed considerably in varieties,with the highest being 100.00％and annual benefits of 21,600 yuan per 667 m2.The"two before and two after"key prevention and control technique costed only 848 yuan per 667 m2,which was the lowest,and the average relative control effect was 81.58％.The measure was highly operable and not limited by the planting area and variety,with a wide range of applications.By continuously applying the measure for 2 years,the disease incidence rate could be effectively reduced and yield significantly increased,with an economic benefit of 16,100 yuan per 667 m2.The green prevention-control technique costed 2,500 yuan,and an average annual income of 28,800 yuan per 667 m2.Its economic benefits were significantly higher than other measures.The measure had improved prevention and control effects on orchards with severe disease and older trees in different areas.All the other technical measures except the three main techniques were local distribution or small scale application,and the effects of different measures were very different from each other,and their popularization prospect needs to he further verified.
kiwifruit bacterial canker diseaseprevention and control technical measureSichuan Province
万方数据
维普
