Peanut three defenses significantly increase production

1, anti-adult. For peanuts with high soil fertility, good fertility and water conditions, and vigorous plant growth, when growth is too prosperous, spraying hormones, or plant growth regulators, can inhibit vegetative growth, promote reproductive growth, and coordinate vegetative growth and reproduction. The relationship between growth. There are three kinds of plant growth regulators suitable for spraying on peanuts, than long, chlormequat, paclobutrazol. The dosage of mu was: 50 kg per 50 grams of water for a long time; 50 grams of water for 100 grams of chlormeka; 15% of paclobutrazol 35 grams of water for 35 grams. Spraying time is generally at the beginning of the scarring. 2, prevent premature aging. Maintaining the full leaf area and maintaining the physiological function of the leaves is an important key to increase the number of fruits and increase the yield. In production, the problem is often that the leaf area and photosynthetic productivity fall sharply at the same time after fruiting, and dry matter accumulation has dropped to a very low level and premature aging has occurred. General reduction of 20-30%. To prevent premature senescence, the foliar spray is usually applied at the stage of pod till the fruit is full. 75-100 kg per acre spray (containing 0.2% of potassium dihydrogen phosphate, 2% of superphosphate, weaker plant growth, plus 1%-2% of urea for yellow-leaved plots), every 7- Spray 10 times a day, usually 2 times, after 4 pm. At the same time, it is necessary to pay attention to timely irrigation under drought conditions to promote the prevention of premature aging. 3, pest prevention. The main disease of peanuts is leaf spot disease. Leaf spot disease is a kind of fungal disease. It can be caused by high temperature and humidity or continuous rainy weather. The symptoms are brown or black spots on the leaves and petiole and stems in severe cases. Generally in the middle and late period, there will be about 25% reduction in production. In the prevention and control of the principle of prevention and treatment of small, early cure, once the prevention and treatment as soon as possible. Prevention methods, in addition to strengthening the management of the field, promoting the robust growth of peanuts, and enhancing disease resistance, can also choose to use agents for prevention and treatment. Insect pests of peanut mainly include aphids and cockroaches. Aphids occur during the whole growth period. It not only affects the normal growth of peanuts, but also causes a reduction in production due to infection with peanut viruses. When it occurs, it is sprayed with 1000 times methamidophos in a 1000 times solution of 40% dimethoate emulsion. The prevention and control method for earthworms: In late June and early July, the water is sprayed with a solution of 800-1000 times of amines, to control their adult pests. A severe plot of plutonium can be irrigated with 500-700 times of phoxim and the effect of irrigation before rain is better.