Six measures to prevent premature aging of fruit and vegetables
Fruit vegetables mainly include peppers, cucumbers, and tomatoes. The symptoms of premature aging are: atrophy of plants, yellowing of leaves, late fruit ripening, low yield, and severe plant death. The main methods for preventing premature aging are as follows: 1. The timely pruning method is: After the first picking of the peppers is completed (at this time, the pepper pods are already in the shoot-breaking stage), 8 twigs growing above the 4 branches and growing near the base are to be taken. Cut it off. At the same time, water and fertilizer management must be strengthened. This will not only reduce excessive consumption of nutrients, but also make the four branches near the base grow light and airy, reduce the phenomenon of falling fruit and increase the output of peppers. Cucumbers should be picked up in 2-5 leaves to promote the formation of turnips, otherwise it is easy to cause obstruction of nutrient transport. Tomato picking time to harvest after the 4th ear fruit, and leave 2 leaves on the ear fruit, so as not to cause premature root failure and leaf curling under the plant, should not be on the 4th inflorescence just a flowering topping. Second, the removal of old leaves of various fruit and vegetable vegetables must promptly remove the plant's lower leaves, dead leaves and diseased leaves in order to prevent field closure. This will not only reduce the nutrient consumption of the plant, but also effectively control the spread and spread of the disease, but also conducive to ventilation and light in the field. 3. Early harvesting of fruit and vegetable vegetables promotes early harvesting of fruits, which can reduce nutrient consumption and prevent premature aging of plants. Fourth, timely top-dressing fertilizer in time to provide sufficient nutrients for plant growth and development, which is the key to prevent plant aging. The best time for topdressing is after the fruit is harvested. It can generally be combined with irrigation to chase the human fecal 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 acre, pepper chase fertilizer should be more appropriate, per acre can be applied about 12 kg of diammonium phosphate, but the need to dissolve fertilizer in water topdressing It is not appropriate to plan for topdressing and avoid hurting the roots of peppers. V. Irrigation and Cooling When the temperature is high, irrigation can be performed according to the weather and soil moisture conditions. When irrigation, small water should be poured to prevent the roots from being damaged by flushing the ridge base. At the same time, after the heavy rain, it is necessary to do a good job of drainage and flood control to ensure the normal growth and development of the seedlings. Sixth, disease prevention and treatment of fruit and vegetable vegetables should pay attention to the early prevention and control of aphids, generally available 20% cypermethrin emulsion 800-1000 times sprayed leaves. Can be used to cucumber powdery mildew 50% thiophanate 800-1000 times or sprayed with 25% triadimefon 1200 times liquid spray, can be used for cucumber downy mildew 40% 300 aluminum aluminum phosphate 300-400 times or 25% rosacea 1000 times spray control. Controlling tomato gray mold can be sprayed with 75% chlorothalonil wettable powder 600-800 times, or 50% thiophanate wettable powder 500 times. Prevention of eggplant Mushroom disease can be sprayed with 75% chlorothalonil 700 times solution or 50% metadione 500 times solution at the beginning of the disease, spraying once every 7-10 days, spraying 3-4 times in total, and spraying uniformly. Sprayed to the leaves and fruits, this can effectively control the development of the disease.