High-temperature "barbecue" vegetable fertilizer and water should keep up

chili

In high temperature season, pepper should be combined with irrigation and topdressing balanced compound fertilizer 1-2 times per mu, 10 kg per mu each time. After the weather turns cool, the pepper enters a vigorous fruiting period, and the plant requires more fertilizer. The topdressing should be applied 2 to 3 times before the end of October, and 20 kg of high-potassium compound fertilizer per mu each time is applied to promote the vigorous growth of the plant and increase the yield and quality of the pepper. . Due to the large water evaporation of pepper plants in summer, in addition to normal fertilization on the roots, foliar fertilizers should be sprayed irregularly according to the growth situation. Spray 0.3% potassium dihydrogen phosphate solution or 1% superphosphate leaching solution or 1% to 2% potassium nitrate solution during fruit-bearing period and after each harvest, spray once every 7-10 days for a total of 2 to 3 times, can increase the weight of single fruit, make the fruit color beautiful.

In case of drought in high temperature, water should be irrigated in time to keep the soil moist. When irrigation, the principle of "one shallow, two urgent, three cool" should be mastered, that is, shallow irrigation does not flood the border; rapid irrigation and rapid drainage, no clear water in the field; irrigation is performed when the soil is cool and the water is cool, usually from 0:00 at night to early morning The best before irrigation. In addition, using straw, wheat straw and other crop stalks to cover the border surface can not only lower the ground temperature, but also reduce water evaporation, which can play the role of water retention and moisture retention and prolonging the growth period. In the event of high temperature and rainy weather, the ditch shall be cleared in time to drain the soil so as to stop the rain and dry the field.

cucumber

The hot season is the fruiting period of cucumbers, and the plants need more nitrogen and potassium fertilizers. Topdressing is required after the first picking of melons, applying 20 kg potassium sulfate compound fertilizer per mu. After entering the peak harvest period, a ditch can be opened in the middle of the border, 15 kg of potassium sulfate compound fertilizer per mu, and the soil can be covered after application. In the later stage, combined spraying can be used for extra-root topdressing, such as spraying potassium dihydrogen phosphate, magnesium sulfate and other trace element fertilizers or 1% urea solution to promote cucumber growth. The amount of topdressing for vigorous plant growth should be appropriately reduced, and the amount of topdressing and the number of topdressing should be increased for weaker plants.

In the hot weather in summer, cucumber seedlings need to be squatted slightly to prevent the seedlings from growing. At this time, the water evaporates quickly, and the time for squatting the seedlings should not be too long, and water should be watered according to the growth of the melon seedlings and the soil moisture. Before harvesting root melons, perform the second field tillage with a depth of 2 cm. Watering should be done frequently after the melons are in full bloom. It should be watered in the evening or morning instead of watering at noon. Pour small water frequently in sunny days; water and sunscreen in time if it is overcast and sunny; when it is overcast or heavy rain, drain and prevent waterlogging; after hot rain, pour well water in time to dissipate heat.

Loofah

Luffa is a temperature-loving and heat-resistant vegetable. It should be planted in loam or clay loam fields that are sunny, high in organic matter, and strong in water and fertilizer retention. In the high temperature season, the loofah is in the fruiting period. To prevent the high temperature from causing the melon, the vines should be supported in time to maintain good permeability of the scaffold. At this time, the fertilization requirements for loofah are relatively high, generally combined with watering and topdressing to urge melon fertilizer, can deepen the ditch to apply organic fertilizers such as peanut cakes and bean cakes, combined with ternary compound fertilizers such as urea, phosphate fertilizer and potassium sulfate. Fertilization should adhere to the principle of "eat less and more meals". The amount of application depends on the condition of the seedlings. If the growth is vigorous, you can use less; if the growth is weak, you can apply 4-6 kg of compound fertilizer extract every 15 days or so.

In the hot season, the loofah should be irrigated. Generally, it should be watered once every 3 to 4 days. It is better to water in the morning and evening to keep the soil moist. In hot weather, although the plants need water, they should also avoid water accumulation. Irrigation should be drained immediately, not flooding, especially in rainy days, and more attention should be paid to drainage to prevent water in the border area.

eggplant

Eggplant requires a lot of nitrogen, but it is not advisable to apply too much nitrogen in the hot season. Ammonia fertilizer topdressing should not be combined with irrigation, because high temperature will not only cause ammonia volatilization, but may also cause ammonia poisoning of eggplant. It is recommended to ditch and bury the soil after topdressing, with a thickness of not less than 5 cm.

In the hot season, eggplant fertilization should be "eat less and more meals", and the urea per mu should be controlled within 30 kg each time. Because high temperature will speed up the conversion of urea applied to the soil, the excess part will be lost after meeting plant needs, especially sandy soil, the loss rate will be greater. The dosage of ammonium bicarbonate per mu should not exceed 40 kg. Excessive application rate will not only cause nutrient loss, but also cause ammonia damage to eggplant leaves and fruits. The high temperature season is also the full fruit period of eggplant. It is recommended to apply two ternary compound fertilizers, each time with no less than 40 kg per mu, to meet the needs of eggplant growth and melon sitting.

When the soil moisture is insufficient, it will slow down the growth of plants and cause falling flowers and melons. Therefore, in the high temperature season, sufficient "root pressure water" should be poured during root fixation to allow the roots to grow quickly. It should be re-watered once before harvest to promote the rapid expansion of the fruit and keep the soil moist during the intermediate growth stage.

Small rape

Small rape is a cold-loving crop. The temperature in summer is high, so the small rapeseeds that are sown at this time generally adopt the direct seeding method, and increase the planting density, and the amount of seed per mu is about 250 grams. Before planting in summer, apply enough base fertilizer, apply 1500 kg of decomposed farm manure per acre, change the commonly used flat border to high border, that is, make a strip of 30 cm wide and 20 cm deep between the border and the border on the basis of the original flat border The drainage ditch can be drained by drought and waterlogging. It is still hot weather within 1 month of live broadcast. Generally, top dressing starts after 15 days of live broadcast seedling age, top dressing once every 6 to 7 days, and top dressing 3 to 4 times throughout the whole period. For the first and second time, use thinner fertilizer and water, and then use 30-40 kg of compound fertilizer per acre for leaching or spreading. The last time should be done before the plants are sealed.

Small rape has a shallow root system and consumes a lot of water, so it is not drought tolerant and requires sufficient water throughout the growth period. If the sun is strong, it is necessary to keep the water sprayed 3 times a day, that is, showering in the morning and evening and showering at noon to cool down and ensure the normal growth of plants. In the rainy season, pay attention to drainage and avoid water in the border area to prevent the occurrence of diseases.

tomato

The high temperature season is the tomato fruit season. At this time, the plant has a large amount of transpiration. The number of watering and the amount of water should be increased. Watering can be done once in 4 to 5 days. Watering should be even. Do not dry and wet to prevent fruit cracking . At this time, 20 kilograms of ternary compound fertilizer should be applied per mu, and about 30 kilograms of ternary compound fertilizer should be applied per mu when the first ear fruit is fully developed. Later, depending on the growth of the eggplant seedlings, apply fertilizer as appropriate. After the first ear fruit is harvested, 10-15 kilograms of potassium sulfate per mu can be topdressed after rain, or watering after fertilization to ensure normal swelling and coloring of the fruit. At this time, foliar fertilizers such as potassium dihydrogen phosphate should also be applied in time.

High temperature can easily cause leaf burns and cause severe chlorophyll fading. At this time, water can be sprayed to cool down, especially when the temperature is higher than 35°C for 4 consecutive hours, sunshade nets should be taken to cool down in time. In case of high temperature and drought, water should be timely and keep the field moisture content at 60% to 70%. In case of high temperature and heavy rain, the waterlogging should be drained in time to control the soil moisture content below 80%.

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