1, the configuration of pollination varieties Although most of the varieties of peach are strong in self-cultivation, cross-pollination can significantly increase the fruit setting rate, especially for varieties without pollen, such as sand early growth, Xia Ha No. 1, and Fangcang early birth. Planting large areas on a large scale often results in inefficient flowering and low yields. Therefore, a pollination tree should be planted at intervals of 2 to 4 rows when the garden is built. The pollination variety must be the same or similar to the flowering period of the main cultivar. Practice has shown that some farmers have entered the period of production results of Taoyuan only flowering is not the result of the first reason is: a large area only introduced the early pollen sand or early wheat and other early-maturing Japanese peach varieties, not equipped with appropriate pollination Variety tree. To this end, the author reminded farmers who introduced peach seedlings to take warning and pay attention to the selection of pollination varieties.
2, using artificial pollination method to remediate pollen-free peach orchards, in addition to the allocation of pollination trees corresponding to the configuration, in the case of bad weather, it is necessary to conduct artificial pollination, artificial pollination method is: select varieties Good, pollen-rich, early flowering, such as Yulu, Baifeng, etc., as pollination varieties, collecting their buds to be placed, peeling off the anthers, spreading them on a glass plate or hard paper, at a white light of 25°C or The pollen was dried in the greenhouse, screened for impurities, and pollen was collected in a vial and stored in a low-temperature, dry environment for use. Pollination method can be mixed with 1 part of pollen with 3 - 4 parts of starch mixed with a small rubber head or a brush at the flowering stage to mix the pollen, and give it to flowers that have just blossomed, and the stigma is green with mucus. Within two to three hours after pollination, it rains or encounters late frost and requires repeated pollination. For a large area of ​​Taoyuan, it is better to use liquid spray powder, that is, 50 grams of pollen, 500 grams of sucrose, 20 grams of borax, and 10 kilograms of water to mix. In the early stage of blossoming, it is accompanied by spraying, which saves time and labor, and the effect is good.
3. To strengthen the existing peach orchard fertilizer management and tree management, especially in soils with weak soil and lack of organic fertilizer, should be applied from September to October each year with P and K-rich poultry manure or manure with bubbling cake fertilizer and other organic fertilizers. After applying nitrogen and potassium ternary compound fertilizer, the “going tender to stay old†complements the cutting of new shoots, and the big tree “opens the window†to improve the light conditions in the canopy and the lower part of the canopy, and promotes full shoots and full flower buds. Bones sticks. Then add 0.3%-0.5% urea and 0.2%-0.3% potassium dihydrogen phosphate in a 50% plus marathon or 80% solution of dichlorvos 1000 times for 1- or 2-times foliar application. Pelicans, pear nets and other pests. For example, if Taoyuan is arid, it is necessary to combine 2-4 shallow long trenches or open holes at about 1 meter from the trunk. After basal fertilization in September-October, it should be irrigated once to prevent early defoliation and increase nutrient accumulation in the trees.
To lay a solid foundation for improving the fruit setting rate in the coming year.
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