During the summer, the eggplant vegetables will pay attention to four defenses

After entering the volcano, the weather became hotter and hotter, and most summer vegetables also entered the result period. Recently, in the process of going to the countryside, the reporter found that many vegetable farmers' sweet peppers, tomatoes, and other vegetables are of poor commercial quality, and the low-quality fruit rate has greatly affected the improvement of efficiency. So, how can the management of solanine vegetables in summer improve quality and yield? The author believes that the following four precautions should be taken into account:

An anti-nutrient growth and reproductive growth imbalance. In summer, the temperature is high, if the ventilation and cooling measures in the shed are unfavorable, the fruit and vegetables in the fruiting period can easily appear prolonged in the long-term high temperature, often causing the vegetables to bloom less, the fruit setting rate to be low, and some will appear seriously. Flower drop phenomenon. If too much fruit is left, it will make the vegetative growth weak, which also affects the quality and yield of the vegetables. Therefore, effective measures should be taken to coordinate the relationship between vegetative growth and reproductive growth. One of its countermeasures is to control the temperature in the shed, such as shading with shade nets and increasing ventilation before and after noon. Generally during the day should be controlled at 30 °C temperature, night should be controlled at 15 °C, temperature control at about 10 °C, to avoid the temperature is too high, the temperature difference is too small; the second is to scientific fertilization, reasonable watering. During this period, topdressing should be dominated by nitrogen and potassium fertilizers, and 15-20 kg of high-potassium compound fertilizer can be topdressed per acre. Light fertilizers containing high-nitrogen fertilizers should not be avoided. Third, measures such as topping and increasing the amount of fruit left in the early stage can be taken. To control the vegetative growth of the plant is excessive; Fourth, drug control. When the plants are prosperous, drug control must be used. 800 active ingredients can be used to spray the leaves.

Second, prevent sunburn. In the summer, solanaceous vegetables are prone to sunburning fruit under high temperature and strong light, especially the most serious peppers, which will seriously affect the commercial quality of the fruit. Prevention and control measures are mainly sunshades and cooling, especially at noon on sunny days. We must set up shade nets and strengthen ventilation and cooling. We must also be careful not to remove branches and leaves without any reason in order to prevent occurrence of sunburn.

Three roots were injured. In the summer season, greenhouse eggplant vegetables often cause root injury due to improper watering or soil-borne disease epidemic or excessive concentration of agents when irrigating roots, causing yellow leaves in vegetables, so care should be taken to preserve the root system. First, avoid flooding when watering, and pay attention to the time of watering must be selected before 10 o'clock in the morning or after 4 o'clock in the afternoon; the second is to pay attention to the use of biological fertilizer with fertilizer, due to biological fertilizer can improve soil structure Enhance the soil fertility, inhibit the role of soil-borne diseases, top-dressing with a suitable amount of biological fertilizer, very beneficial to the growth of vegetable roots. Generally, 100-150 kilograms of fertilizer per acre is more suitable for the topdressing of biological fertilizers; Can use 72.2% of Prec 600 times to irrigate the vegetables before the results, which can effectively prevent the occurrence of vegetable root diseases, and pay attention to the higher temperature in summer. Pharmacy is easy to cause harm at higher temperatures. Do not blindly increase the amount of medication for quick results.

Four prevent pests and diseases. In summer, when it is hot and rainy, vegetables in greenhouses are prone to diseases under conditions of high temperature and high humidity, such as epidemics, leaf mold, viral diseases, and bacterial leaf spot. In addition, in the summer, it is also the peak season for the reproduction of aphids, aphids, leafhoppers, thrips, whitefly and other pests. Effective measures should be taken to prevent and control them in advance. General disease can be controlled by 72.2% Prokaryl 600 times; virus disease can be controlled by 300 times the virus A mixed with ningnanmycin for 300 times; leaf mold and bacterial leaf spot can be used 47% Garnett WP 600 times Liquid or DT500 times control; For the above pests, the insect net should be set at the air outlet of the greenhouse to prevent pests from infiltrating. For insects that infiltrate into the shed, they can be controlled by the yellow trapping method in the shed, and 3% can also be used. Dimethoprim 1500 times mixed 10% imidacloprid WP 2000 times. In addition, timely removal of weeds and other insect pests outside the shed is also an important measure to prevent the occurrence of such pests.

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