May is the most critical period for the growth of vegetative growth and fruit growth in the fruit cycle of the vast majority of fruit trees. Due to the recent rapid temperature rise, plant growth is strong, and it is suitable for the occurrence and damage of fruit tree diseases and pests. Therefore, it is also the prevention and control of fruit tree diseases and pests in a year. The key season. The majority of fruit growers in the country have strengthened field investigations in the orchard, grasping the appropriate period of prevention and control of disease and pests in fruit trees, and adopting effective comprehensive prevention and control measures to control and reduce the damage caused by pests and diseases to a minimum.
1. Agricultural Prevention and Control: Clearing drainage and removing weeds from orchards in time for rainy seasons to improve the orchard's ecological environment will benefit the healthy growth of trees.
2. The use of physical control to trap and kill pests: In early May, a trap lamp is hung. Generally, a lamp is hung for every 20 mu, which effectively kills most moths of moths, scarabs, dipteras, and homopterans. The number of medications.
3. Use high-efficiency, low-toxic and pollution-free safe pesticides for chemical control.
(1) Pear Orchard: The key spray of 12.5% ​​diniconazole 3000 times (or 70% tebuconazole 5000 times) plus 80% mancozeb WP 800 times. Spray once every 10 days; spray within 5 days after spraying should be sprayed again before bagging.
(2) Grapes: Focus on spraying 40% fluorosiliconazole emulsion or 70% diniconazole granules 5000 times or 12.5% ​​diniconazole WP 3000 times 70% pyrimethanil granules 1700 times 5% acetamiprid EC 3,000 times .
(3) Peach and Li Yuan: The key spray of 70% pyrimethanil granules is 1700 times, 24% of benzoxazole suspension is 5,000 times, 5% of acetamiprid is 3,000 times, and 5.7% of cyfluthrin EC is 1500 times;
(4) Citrus Orchard: The key spray 20% fluorenone EC 2000 times plus 50% quinoline copper 1500 times.
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