In the hot season, peppers should be combined with irrigation per acre top-up compound fertilizer 1 or 2 times, each time 10 kg per acre. After the weather turns cold, the peppers will enter a vigorous fruiting period, and the plants will need to increase the amount of fertilizers. Before the end of October, fertilizers should be topdressed 2 or 3 times, applying 20 kg of high-potassium compound fertilizers per acre to promote vigorous plant growth and increase the yield and quality of peppers. . Because of the large amount of water evaporation in summer pepper plants, in addition to the normal fertilization of the roots, but also depending on the growth conditions, spraying foliar fertilizer occasionally. During the fruit period and after each harvest, 0.3% KH2PO4 solution or 1% superphosphate leachate or 1%-2% KNO3 solution is sprayed and sprayed once every 7-10 days. 2 or 3 times, it can increase the weight of the single fruit and make the fruit color bright.
In the event of high temperatures, drought should be diverted from time to time to keep the soil moist. When watering, it is necessary to grasp the principle of “a shallow, two urgent, and three coolâ€, that is, shallow irrigation is not diffuse; emergency irrigation is urgent, the field is not seen in clear water; soil is cold and water is cold when it is cold, usually at 0:00 to early morning Before the best irrigation. In addition, the use of rice straw, wheat straw and other crop stalks covering the sorghum surface, can not only reduce the temperature, but also reduce the evaporation of water, can play a role in moisturizing and prolonging the growth period. In case of high temperature and rainy weather, it is necessary to clear the ditch in time so that the rain will stop.
eggplant
The amount of nitrogen needed for eggplant is large, but it should not be used excessively in high temperature seasons. The topdressing of ammonia fertilizer should not be combined with irrigation, because the high temperature will not only cause ammonia volatilization, but also may cause eggplant ammonia poisoning. It is advisable to apply ditching, to bury the soil after top dressing, and to have a thickness of not less than 5 cm.
During the hot season, eggplant fertilization should "eat less meals." Urea application per acre should generally be controlled within 30 kilograms. Because the high temperature will accelerate the rate of urea application to the soil, the excess will be lost when the plant needs are met. Especially sandy soil, the proportion of loss will be greater. Ammonium bicarbonate should not exceed 40 kg per acre. If the application amount is too large, besides causing loss of nutrients, it will also cause ammonia damage to leaves and fruits of eggplant. The high-temperature season is also the fruitful period of eggplant. It is recommended that top-dressing TW should be applied twice, with no less than 40 kilograms of fertilizer per acre, to meet the needs of eggplant growth and melon production.
When the soil moisture is insufficient, the plants will grow slowly and cause the flowers to fall. Therefore, during the high temperature season, the roots should be poured with “root water†in order to make the roots grow quickly. In the early harvest period, they should be re-poured once again to promote the rapid expansion of the fruit. During the middle growth stage, the soil can be kept moist.
cucumber
The high temperature season is also the result of cucumber. Plants need more nitrogen and potassium. After the first time the melons were topdressed once, and 20 kg of potassium sulfate compound fertilizer was applied per mu. After entering the harvest period, the ditch can be ditched in the middle of the hoe, and 15 kg of potassium sulfate compound fertilizer is applied per mu, and the soil is applied after the application. The later combined spraying can be used for extra-root dressing, such as spraying potassium dihydrogen phosphate, magnesium sulfate and other trace element fertilizers or 1% urea solution to promote the growth of cucumber. The amount of topdressing fertilizer that grows vigorously should be appropriately reduced, and the weaker plants should increase the amount of fertilizer and the frequency of topdressing.
In summer hot weather, cucumbers need a little seedlings to prevent them from growing. At this point, the water evaporates quickly, and the seedlings should not be grown too long. Watering should be done in time according to the growth of the fruits and soil moisture. The second cultivator was taken before harvesting the root melon, 2 cm deep. After entering the melon period, watering should be done. Water should be poured in the evening or in the morning. It should not be watered at noon. The water is poured in sunny days; even when it is cloudy and sunny, it must be watered in time; when it is rainy or heavy, it should be drained and flooded; after the hot rain, the well water should be drained in time.
Canola
Small canola is a cool crop. In summer, the temperature is high. At this time, the seeded rapeseeds generally adopt the live broadcast method and increase the planting density. The amount per mu is about 250 grams. Before summer planting, sufficient basal fertilizer should be applied, and 1500 kg of farmyard manure per acre should be applied. The commonly used oysters should be changed to sorghum, that is, on the basis of the original rake, a width of 30 cm and a depth of 20 cm should be made between rake and rake. Drainage ditch, so that drought can be poured, rake can row. Live within 1 month, still hot weather. Generally, the top dressing is started 15 days after the seedling age, top dressing is performed once every 6 to 7 days, and top dressing is applied 3 to 4 times. The 1st and 2nd rounds of available thinner water and fertilizers will be sprayed or sprinkled with 30 to 40 kg of compound fertilizer per acre later, and the last time will be carried out before the plant is sealed.
Brassica napus has a shallow root distribution and high water consumption, so it is not tolerant to drought and requires sufficient moisture throughout the growing season. If the sun is strong, it must be kept 3 times a day, that is, morning and evening watering and showering at noon, in order to play a cooling role to ensure the normal growth of plants. In the rainy season, we must pay attention to drainage, and avoid flooding water to prevent the occurrence of diseases.
Loofah
Luffa is a thermophilic and heat-tolerant vegetable that should be planted in loam or clay loam fields with high sunny content, high organic matter content, and strong water and fertilizer retention. During the high temperature season, loofahs are in the melon period. To prevent the high temperature from causing the melons, the vine should be supported in a timely manner to maintain the good permeability of the scaffold. At this point, loofah fertilization requirements are higher, generally combined with water chase to promote melon fertilizer, can open the ditch deep decomposed peanut cake, bean cake and other organic fertilizer, coupled with application of urea, phosphate fertilizer and potassium sulfate and other ternary compound fertilizer. Fertilization should adhere to the principle of “eat less and more mealsâ€. The amount of application depends on the condition of the seedlings. If it grows vigorously, it can be applied less. If the growth is weak, it can also apply 4 to 6 kg of compound fertilizer leachate every 15 days or so.
In high temperature season, loofahs should be irrigated, usually 3 to 4 days, watering once, watering well in the morning and evening to keep the soil moist. In hot weather, although the plants need water, they should also avoid accumulation of water. When irrigation, they should be filled with irrigation and flood irrigation, especially in the rainy days, drainage should be paid attention to in order to prevent the water in the area.
tomato
The high temperature season coincides with the fruit-filling period of tomatoes, when the temperature is high, and the transpiration of the plants is large. Therefore, it should increase the number of watering and irrigation, can be 4 to 5 days 1 water; water should be uniform, do not suddenly dry and damp, to prevent cracking. At this time, Mushi Sanyuan Compound Fertilizer should be 20 kilograms, and when the first ear fruit is fully developed, the Mushi Sanyuan Compound Fertilizer will be about 30 kilograms, and then fertilization will be applied according to the growing condition of eggplant seedlings. After harvesting the first taro fruit, 10-15 kg of potassium sulfate may be applied per acre after rain, or water may be applied after fertilization to ensure normal coloration and enlargement of fruits. At this time, it is also necessary to top-up such as potassium dihydrogen phosphate and other foliar fertilizers.
The high temperature can easily cause leaf burns, resulting in serious discoloration of chlorophyll. At this point can spray water cooling, especially when the temperature is higher than 35 °C for 4 hours in a row, it is necessary to take timely measures such as shading net cooling. If the high temperature meets the drought, it should be watered in time to maintain the moisture content in the field between 60% to 70%; if the high temperature meets the heavy rain, it should be drained in time to control the soil moisture content below 80%.
Right now it is a three-volt days, and the high temperatures from south to north continue to “bake†the vegetables in the field. At this time, if it is not managed properly, it will cause the plants to shrink, but it will cause burns and rot. If the vegetables are used, the production may be reduced or even eliminated. Today, this edition invites experts to give detailed explanations on how to conduct fertilizer and water management in high-temperature summer with six common vegetables such as pepper, eggplant, cucumber, canola, gourd and tomato.
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