Alpine tomatoes are the main varieties of alpine vegetables in our city. The planting area is over 5,000 mu and the total output is 15 to 200,000 tons. Most of the products are sold to large and medium cities such as Shanghai and Hangzhou. In order to promote the continuous increase of income of farmers in mountainous areas, the city's agricultural technology department introduced the new tomato variety Baili Tomato in the previous year for trial production. The initial success was achieved. The average yield of this variety was more than 30% higher than that of the control variety 903, and it had good taste and quality. Excellent, fruit-type neat, good commercial, storage and transportation advantages. However, due to the scarcity of land available for use in mountainous areas, resulting in continuous cropping of cultivated land, coupled with high temperatures in summer and autumn, and high rainfall, tomato pests and diseases, especially bacterial wilt, have become increasingly severe, constraining the healthy development of tomato production. The following describes a set of pest control techniques suitable for pollution-free alpine tomatoes in northwest Zhejiang.
1, prevention and cure strategy
Take the comprehensive prevention and control of agriculture, supplemented by chemical control strategies. Chemical control must comply with the requirements of Zhejiang Province's pollution-free vegetable standard DB33/T291.2-2000.
2. Agricultural methods
For resistant varieties, Bailey tomato grafted seedlings can be selected; crop rotation can be used to avoid continuous cropping with eggplant vegetables; insecticide nets can be used to cover nursery seedlings and use field-vibration insecticidal lamps and sex attractants at field; strengthen fertilizer and water management and foster strong Seedlings, improve plant resistance.
3. Chemical and Biological Pesticide Control
The main pests and diseases - Gabriel tomatoes through grafting can be a good way to reduce the disease, especially for tomato bacterial wilt effective, but does not mean that there is no disease, prevention and treatment must not be relaxed.
The damage tomato diseases mainly include early blight, gray mold, leaf mold, bacterial wilt, blight, virus disease and late blight. The pests that harm tomatoes are mainly fleas, aphids, leaf miners, cotton bollworms, and noctuids. Aphids were treated with 10% imidacloprid 3000 times; leafflies were treated with 1% avermectin 3000 times and ciprofloxacin 5,000 times; cotton bollworms and night moths were treated with 3000 times strength worm crystals.
For early blight and late blight, 600 times for frost breaks and 70% for mancozebite 600 times for spray prevention and control, 2-3 times for every 7-10 days.
In the early stages of gray mold and leaf mold, the back and ground of the leaves were sprayed with 600 times the amount of Fukang and 750 times the amount of ash pyroprene. Attention was paid to uniform spraying, and even 2-3 times for 7-10 days. Or add an appropriate amount of quick-glycemic powder at the time of flowering.
Fusarium wilt was treated with 40% WP manganese manganese zinc and 70% mancozeb manganese 600 times.
Bacterial wilt is controlled by agricultural streptomycin 1.5 million units/15kg.
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