Preventing pests and diseases in vegetables timely after the heavy rain

The heavy rains that lasted for several days in mid-June caused a large impact on the normal production of vegetables: some of the low-lying areas were flooded, the leaves of the seedlings were affixed to the ground, the vegetable sheds were put down and the leaves of the leafy vegetables were broken by rainwater. . After the heavy rains, the weather will immediately turn fine. The high temperature and high humidity environment is very conducive to the spread of pests and diseases of fruits and vegetables. In order to do a good job in the normal production of vegetables, the following opinions are proposed:
First, the flooded vegetable fields should be cleared in time to clear the canal, eliminate field water, and properly raise the height of the surface, reduce the water level in vegetable fields, promote plant root growth, and at the same time in the field of agricultural operations for field cleaning work; Open ventilation and ventilation in time to reduce the humidity in the greenhouse.
Second, after the rain is fine, it should cover the shade net or cover the grass in time, as soon as possible to restore the active root water absorption function, to avoid the plants lose water wilt. For the weak growth, or the emergence of some dead seedlings of the vegetable field, seedlings should be checked in time to make up the seedlings, once the plants return to life, they should promptly apply fertilizer, can also be applied to foliar dressing, improve vegetable resistance, and promote vegetable growth.
Third, we must be alert to melons, vegetable diseases, solanaceous vegetables bacterial wilt, cruciferous vegetables, bacterial soft rot and other high-temperature and high-temperature disease pandemic, early medication prevention. Prevention and control of epidemic diseases, can be used in the early onset of 64%? Fazuma Mn-Zn ultra-fine WP 1000 times, or 50% din morpholine wettable powder 2500 times; control bacterial wilt, soft rot and other bacterial Diseases can be controlled by spraying 20% ​​copper thiobacillus suspension 500 times or 50% bromobromoisocyanuric acid wettable powder 1000 times in the early stage of disease. After the pesticides are applied on the protective fields, they must be ventilated and ventilated to reduce the humidity in the greenhouses.
Fourth, pest control, the focus is leafy vegetables and legumes. Current bean sprouts have been harmed on cowpeas. If cowpeas are in the initial flowering stage, they can use 2.5% of cyhalothrin or 2.5% of deltamethrin 2500 times for prevention and treatment. If they have already entered the picking stage, they can use 20% of the chemical. Benzamide 3000 times solution; 10% nitenpyram can be used to control Bemisia tabaci L. 1500 times solution; 40% chlorpyrifos 800 times solution can be used to control yellow flounces. % of methamectin benzoate 1500 times.
Fifth, scientific and safe medication should be used. Note that pesticides that are explicitly prohibited by the State from being used on vegetables are strictly prohibited during the safe interval of medication.

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