Immediately into the high temperature and drought season in summer, the continued high temperature weather will have a greater impact on the production of eggplant, pepper, cowpea, gourd, zucchini, leeks, spinach, fresh corn and other vegetables grown in the open field, resulting in lighter plant growth and atrophy. Causes burns of vegetables and fruits; after the fall, the management of eggplants and fruit vegetables is more difficult to manage, and thin and thin seedlings are easily formed, affecting the rate of seedling formation; and fast-growing leafy vegetables are rotted and aged. In order to cope with the current high-temperature weather, prevent vegetable production from falling short, and the shortage of supply in the market, current vegetable production management should pay attention to the following aspects:
1. Grab the fast-growing vegetables and increase the effective supply. Select varieties of heat-resistant and drought-tolerant vegetables, such as cabbage cabbage, cauliflower, cabbage, roots and radishes, carrots, and kohlrabi; green leafy vegetables, leeks, spinach, etc.; autumn fruits and vegetables, use The method of seedling substrate seedlings to prevent seedling leggy.
2. Promote “two-mesh and one-film†coverage measures to improve resilience. In the summer high temperature season, two nets and one membrane (ie shade nets, insect nets and ceiling film cover) should be adopted. On the leafy vegetables such as leeks, celery, onions, etc., the use of shade nets to cover the cultivation, can be appropriately sown early listing, improve the quality of vegetables, after sowing can also be used to cover the surface, after the emergence of late cover early cover. When using shade nets on seedlings such as cauliflower, cabbage, tomatoes, peppers, eggplants, etc., attention should be paid to ventilation and dehumidification to prevent leggings from growing. Greenhouse vegetable production can cover greenhouse films for rain sheltering to avoid heavy rain erosion and reduce disease occurrence. The conditional use of the entire network or covering the insect-proof nets around can realize physical measures to isolate pests and reduce pests and diseases.
3, promote the integration of water and fertilizer technology, saving water and fertilizer. High-temperature soil evaporation is large. Applying micro-irrigation and micro-injection techniques to the vegetable field can increase the humidity and reduce the temperature, improve the microclimate in the field, and regulate the status of soil water, fertilizer, gas, and heat, effectively reducing the harm caused by high temperature and drought to vegetable production. To promote vegetable growth.
4, weeding, timely fertilizer. Weeding and cultivating loose soil to keep the soil loose in vegetable fields, reduce evaporation of soil moisture, prevent weeds from competing for water, and promote sprouting. In accordance with the principle of "beneficial fertilization by thin fertilizers," drip irrigation is usually applied in the morning or evening to spray foliar fertilizer.
5. Strengthen pest control and ensure product safety. Comprehensive use of pest control nets, insecticidal lamps, swatches, insect sex attractants and other measures to control pests such as Plutella xylostella, Spodoptera litura, yellow striped fleas and other vegetables. Should pay attention to rational drug use, safe drug use, the use of highly toxic and high-residue pesticides is strictly prohibited, and safety intervals are ensured to ensure the quality and safety of vegetable products.
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