There are five strokes in spring pear management
1. Pruning: Pruning of branches of pear trees is continued to regulate growth, which is conducive to ventilation and light transmission.
2. Apply fertilizer to pear tree before flowering: Apply fertilizer immediately before pear tree flowering, quickly increase the nutrient level of the tree body, promote the tree vigor, and improve the stress resistance of the flower bud, so that the new shoots and flower buds can be pumped out. robust. Pollen activity, pollination and fertilization, high fruit set rate. The specific approach is as follows:
Before the flower buds of pear trees sprout, generally 5-10 days before and after the beginning of spring, before flowering, fertilizers are mainly organic fertilizers, phosphorus and potash fertilizers, and fruit trees more than 5 years old are used to produce cooked man and livestock poultry manure. 20 kg, 1 kg of cooked peanuts, 1.2-2 kg of potassium dihydrogen phosphate. Under the canopy, dig 6-8 radiation grooves 15-20 cm deep, 30-40 cm wide and 80-100 cm long. After the fertilizer is fully mixed, mix it with the excavated mud and fill it in the ditch. However, after fertilization and drought, it must be 60-80 kilograms of clear water for each tree to promote the transformation of fertilizer dissolution, supply root absorption and utilization, and increase fertilizer absorption and utilization. In addition, in the flower bud stage, spraying 2-3 times of the mixture of 0.1% magnesium sulfate, 0.1% borax, 0.3% urea, 0.5% potassium dihydrogen phosphate, and new high-fat film should be applied to the leaves.
3. Reasonable Intercropping: It is forbidden to plant high pole crops in pear gardens. Only green manure crops and dwarf crops (such as soybeans, mung beans, and peanuts) can be grown.
4, Baohua Baoguo: The fundamental measure for the preservation of fruit is to strengthen the management of soil, fertilizer, water, and pest control. In addition can be taken before the flowering in the top of the tree spray Kawang 3 can transform the vegetative growth of plants into reproductive nutrition, promote flower bud differentiation, improve the quality of pollen fertilization. More flowering, more fruit set, prevent fruit drop, promote development.
5, pest control: before flowering and after Xiehua with 800 times of freshwater, 600 times Xiansheng, 25% carbendazim 300 times, powder rust 1500 times pear rust, pear black disease, pear black Heart disease, pear brown spot, and flower rot are treated for 2-3 times in a row and every 10-15 days. With 30% trichlorfon 800 times, 2.5% enemy killed 3000 times to control pear borer, pear caterpillar, pear stem bee; with 40% dimethoate + new high fat film for pear aphid prevention.
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