Ren used apricot, known as "apricot flat", early spring flowering, often encounter frost damage. In recent days, temperatures in various parts of our province have changed greatly, which can easily lead to the disturbance of the apricot apricot flowering period. Attention should be paid to preventing cold attacks. Based on the popularization of conventional cultivation techniques, technical extension departments in various regions should guide fruit growers to strengthen underground and above-ground management, enhance the growth potential of trees, and increase the ability of kernels used to resist late frost damage.
1. Spraying anti-frost agents during flowering. In the apricot kernel bud stage, flowering stage, and after flowering, each sprayed anti-cream agent No. 2 1000 times fluid and Tianda 21161000 times fluid once (spray once every 7 days until the bud stage begins). When dispensing with clean water, the spraying should be uniform and thoughtful, and the flowers must be treated on both positive and negative sides. This can effectively prevent apricot flower organs from frost and enhance their ability to resist cold.
2. Add soil conditioner. A 500 times solution of soil conditioner was applied to the surface of the apricot flower buds at the germination, fruiting, and fruiting 30 days after spraying to improve soil structure and physicochemical properties, microbial population and enzyme activity, and promote tree root growth and water absorption. With the ability of mineral elements, it can also increase the amount of roots absorbed to achieve the effect of rejuvenation.
3. Spray plant growth promoter PBO. Spraying PBO, a plant growth controller, 30 days, 60 days, and one week before flowering, can delay flowering time and avoid frost damage. The first and second doses were 1:200 and the third was 1:100. Spray cloth to be meticulous and thoughtful.
4. Add apricot kernel fertilizer. The application of high-nitrogen fast-dissolving fertilizer before budding, 2-4 kilograms per plant, application of apricot-specific fertilizer 2 kg/plant after anthesis and fruit expansion, applied in radial grooves with a depth of 30-40 cm, can supplement the tree nutrition, enhance Tree vigor.
5. Reasonable pruning, moderate load. The shape of the tree is naturally rounded, evacuated, or natural. Dry height 50-70 cm, tree height in the 3-3.5 meters, the whole tree has 10-15 small main branch, arranged around the center leading spiral, with a small fruit on the branch, the angle of 70-80 degrees. Saplings should be lightly cut, long-distanced, and long branches should be kept. The pruning should be light and should not be heavy so as to enlarge the canopy. Fruit pruning during full fruit period should focus on the results of branch culture, open the light path, the results of the branchlets short, and maintain robust. The group of continuous results is retracted and updated in time to control the tree load and enhance the tree potential. Before the full flowering period and the hard nuclear period, reasonable sparse fruiting and fruiting, the fruit production per mu in the fruit period is controlled at 500-750 kilograms.
6. Pest control. Focus on the prevention and control of apricot disease, bacterial perforation, fluid injection disease, Xingxing caterpillars, apricot ball scale insects, apricot wood moth and other pests and diseases, enhance tree vigor, and improve resistance to late frost damage.
In the sprouting stage of flower buds, the whole park sprayed 3-5 Baume degrees of lime sulfur, or sprayed 1:800 times strong clear garden agent to prevent the use of apricots during the wintering stage of the ovum and ubiquitous ball pods. Other pests. Check the growing season at any time and found that branches and leaves of apricot disease are cut off in time and burned or buried deeply. When it was found that the tree trunk moth was harmful, the larvae that broke into the trunk were killed in time. When the apricot larvae were found to infest the leaves, they were immediately sprayed with BT emulsion or contact insecticides to kill larvae, or adult insects were culled with black light during the adult period. It was found that it was necessary to promptly scrape the lesions and apply antiseptics.
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