Fruit bag anti-cracking and disease prevention integrated technology:
First, the fruit bag anti-cracking disease prevention integrated technology features
1. Select the secondary branches of the jujube fruit stage results (string results) for bagging.
2. Spray the fungicide. Spray the fungicide 1-2 times before bagging, spray the fungicides that kill fungi and bacteria one time, and spray once every 10 days.
3. Thinning the fruit. Remove the diseased fruit, insect fruit and dysplastic fruit before bagging.
4. Bagging method. Pull the "U"-shaped fruit bag with a length × width of 7800 mm × 550 mm or a length × width of 6500 mm × 550 mm (to round the fruit bag as much as possible), and pull it from the lower part of the secondary branch of the result set to the second In the branch of the branch (the new branch of the year), the fruit bag is fixed on the secondary branch with the tie on the fruit bag.
5. Bagging time. The jujube garden for individual prevention and control of cracked fruit is carried out in the white ripening period or before the rainy season. The best time for bagging in Jinzhong City and Taiyuan City of Shanxi Province is from August 5th to August 25th; comprehensive prevention and control of cracked fruit and black spot disease The jujube garden is carried out in the first 10 days of the white ripening period or when the longitudinal diameter of the young fruit is 2-3 cm, and the optimal period of bagging is about 20 days. The bagging time in Jinzhong City and Taiyuan City of Shanxi Province is July 10th. Until July 30th. If the comprehensive control of cracking fruit and black spot disease in the jujube bagging time is not well mastered, the effect of preventing and controlling black spot disease is poor.
Second, the fruit bag anti-crack and disease prevention integrated prevention and control effect
The technology significantly reduced the cracking rate of jujube, jujube, jujube, winter jujube, handsome jujube, and jujube in the rain, and the average cracking rate of jujube in the bag was 6.79%, and the average cracking rate of the control was 65%-85.42%. . Among them, the anti-cracking effect on the jujube is the most significant. In the best time period, the jujube fruit bag prevention and control technology was implemented, which significantly reduced the incidence of black spot disease in the jujube and jujube rain season. The average incidence rate of jujube in the bag was 10.8%, and the average disease rate of black spot disease was controlled. It is 84.3%-95%. The black spot disease of Banzao, Dongzao and Jinzao is lighter, and the implementation of multi-fruit bagging technology is mainly to prevent and control cracking fruit, and the effect of preventing and controlling fruit cracking is remarkable.
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