Comprehensive control method for dragon fruit canker

[0031] Example 1

[0032] A 30-mu orchard in a district of Guangzhou City, Guangdong Province, planted in the spring of 2012. Due to the disease of seedlings, ulcers broke out during the fruit-bearing period in the summer of 2013, and the phenomenon of fruit rind was serious, with the rind rate reaching about 60%, and the economic benefit was poor. In the autumn of 2013, the comprehensive prevention and control method of dragon fruit canker of the present invention was adopted, and the agricultural operation was strictly performed according to the method of the present invention, and the details are as follows.

[0033] A comprehensive prevention and control method for dragon fruit canker:

[0034] 1) On the ground at the entrance of the orchard, a lime belt of about 1 meter (0.8-1.2m) wide is spread every year to reduce the spread of pathogenic bacteria carried by people and human factors.

[0035] 2) The diseased orchard focuses on prevention, combined with chemical control. Differen

[0045] Example 2

[0046] A 40-mu orchard in a district of Haikou City, Hainan Province, started planting in May 2013. In mid-July of that year, the newly sprouting shoots appeared sporadic chlorotic depressions with a diameter of 0.5-2mm. Due to lack of understanding of the symptoms of ulcer disease, it could not be performed Timely and effectively control. In June 2014, fruit bearing began, and ulcer lesions on the young shoots increased, the area of ​​the stem surface lesions reached 45%, and the disease level was 4. Fruits are also harmed. There are more flowers and rinds, and the rind rate reaches more than 50%, which seriously reduces the commercial value of fruits. In the autumn of 2014, the comprehensive prevention and control method of dragon fruit canker of the present invention was adopted, and the agricultural operation was strictly performed in accordance with the method of the present invention.

[0047] A comprehensive prevention and control method for dragon fruit ca

[0056] Example 3

[0057] A new 20-mu orchard in a district of Nanning City, Guangxi Zhuang Autonomous Region, planted in the spring of 2014. Before planting, select disease-free seedlings for cultivation, so as to cut off pathogen transmission from the source. The agricultural operation is strictly performed according to the method of the present invention.

[0058] A comprehensive prevention and control method for dragon fruit canker:

[0059] (1) Newly build orchards, select disease-free seedlings for cultivation, and cut off pathogen transmission from the source;

[0060] (2) On the ground at the entrance of the orchard, a lime belt of about 1 meter (0.8-1.2m) wide is spread every year to reduce the spread of pathogenic bacteria carried by the movement of people and human factors;

[0061] (3) Prevention is the main focus of orchards without disease. Different preventive measures are taken in different seasons, and the lowest dose of medicine is used. After dissolving all medicament