Fruit and vegetable vegetables such as peppers, cucumbers, and tomatoes are prone to premature aging during the summer season. They are mainly characterized by atrophy of the plants, yellowing of the leaves, late fruit ripening, and low yields, which can severely cause the plants to die prematurely. The cause of premature senescence is mainly high temperature and rainy weather. Therefore, management measures such as irrigation and cooling are forgotten. 1, pruning pruning. Pruning can increase the amount of ventilation, picking up the heart can prevent the plants from being long, reduce the excessive consumption of nutrients, and promote the plant's multiple results. Practice has proved that reasonable pruning of pepper can significantly increase yield. The operation method is: After the first batch of peppers are picked, 8 branches growing above the four large branches growing near the base are cut off. This will not only avoid excessive consumption of nutrients, but will also allow the four large branches growing near the base to be well ventilated and light-transmitting, which will reduce the number of fruit and fruit. When the cucumber grows to 25 leaves, it will be picked up to promote the formation of the melon. Otherwise, the nutrition transport may be hindered. Tomato picking time to sit in the fourth ear fruit, and leave two leaves on the ear, so as not to cause premature root failure and leaf curling of the plant, should not bogey in the fourth ear inflorescence just to pick up the heart. 2, remove the old leaves. For various fruits and vegetables, the old leaves, dead leaves and diseased leaves in the lower part of the plant must be removed in time to prevent field closure. Doing so can not only reduce the nutrient consumption of the plant, but also effectively control the spread and spread of the disease, and it is also conducive to ventilation and light in the field, and promote the robust growth of plants. 3, irrigation cooling. In the hot summer season, irrigation can be performed according to the weather and soil moisture. Small water should be poured during irrigation to prevent erosion of the roots of the ridges. At the same time, after the heavy rain, we must do a good job of drainage and flood control to ensure the normal growth and development of seedlings. 4, early harvest. Fruit vegetables encourage the early harvest of fruits, which can reduce nutrient consumption and prevent premature aging. 5, timely fertilizer. Timely topdressing is to provide sufficient nutrients for the growth and development of plants to prevent the key to aging. The best time to top-dressing is after each batch of fruit is harvested, it is generally possible to combine irrigated water to recover human urine or nitrogen fertilizer and phosphate fertilizer 1-2 times. Cucumber topped with 10 kg per acre of diammonium phosphate, eggplant topped with 10 kg of urea per mu, and topped with about 12 kg of diammonium phosphate per acre. Fertilizer fertilizer should be dissolved in water when applying fertilizer to hot peppers.
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