Recently, Ma Wenzhe, deputy director of Shaanxi Horticultural Society and professor of Yangling Vocational and Technical College combined with the actual management of kiwi garden in spring, proposed the following management measures:
Strengthening ground management of kiwi garden in spring
Clearing the garden: Before the beginning of March, completely remove the rotten diseased branches, powdery mildew diseased branches, and grasshopper-damaged branches in the kiwi orchard, remove the residual leaves, dead fruits and hanging branches and pull branches from the tree, and clean the ground from fallen leaves, fallen branches, and diseased fruits. And paper bags and packaging wastes were burned and buried in tree trays in an effort to be comprehensive.
Scraping old warped skin: Combine the scraping of naturally generated old warped skin, thoroughly scrape old warped skin and disease spots caused by rot disease and branch ring disease, and strive to achieve "one scrape, two coats, three wipes" "Four, four wrap, five bridge" technical requirements, can be applied with methionine acetic acid, copper humate or bacteric acid paste. Wound protection agents must have three characteristics, that is, they have the effect of eradicating, being harmless and promoting healing.
Spraying the tree body: Spray the kiwi tree body in time in early March. The spraying should not only prevent diseases and insect pests, but also supplement the tree body. The specific plan is as follows: ①25% propiconazole EC 4000 times liquid + 40% chlorpyrifos 1000 times liquid + fruit Friends amino acid 200 ～ 300 times solution + Roushuitong 4000 times solution; ② 25% propiconazole 4000 times solution + 40% fetalphos 1000 times solution + Guoyou amino acids 200 ～ 300 times solution + Roushuitong 4000 times solution; ③General Dejin 400 times solution + 40% chlorpyrifos 1000 times solution + fruit friend amino acid 200-300 times solution. The spray on the tree should be even and thoughtful, shower-like, and the ground should also be sprayed.
Underground management of kiwi garden in spring
Increased application of organic fertilizer + biological bacterial fertilizer: At present, due to the partial application of chemical fertilizers in Shaanxi Province for many years, the organic fertilizer and microbial fertilizer are not valued. There are three common deficiencies. The first is the lack of organic matter. The content of organic matter in most orchards is below 1%. Meet the requirements for high-quality fruit production; Second, the lack of beneficial microorganisms. Due to the excessive application of chemical fertilizers and pesticides, the beneficial microorganisms in the soil were killed, resulting in soil compaction, more and more pathogenic bacteria, low fertilizer utilization, poor soil structure, and fruits. The quality is degraded. Third, the lack of trace elements, especially calcium, magnesium, zinc, boron and other elements, is prominent. Bitter pox, yellow leaf disease, small leaf disease, and fruit shrinkage are more common. Therefore, a sufficient amount of organic fertilizer should be applied per acre, and 1-2 tons of high-quality rotten cooked cattle and sheep dung + 200-400 kg of biological bacterial fertilizer should be applied per acre in the grown-up garden, and 10-20 kg of soil conditioner should be properly mixed. Mix organic fertilizer with topsoil, then ditch water to promote rooting and germination.
Tree tray treatment: Treat the soil around 1 meter around the trunk with chlorpyrifos 300-400 times liquid after startle and before Qingming, and control pests such as heartworm, chafer, cotton apple aphid, etc.
Orchard grass: The pattern of orchard grass is divided into two modes: natural grass and artificial grass.
Natural grass: artificial control of woody stems, plants that are too tall, roots too deep, and highly competitive malignant weeds such as Chenopodium spp. Grass, fertilization to promote development, strengthen protection and development, through two or three years of development, gradually develop beneficial grass, control malignant grass, to achieve the purpose of orchard grass.
Artificial grass planting: It is generally implemented by the method of "planting grass between rows, clearing and mulching between plants", and grass species and leguminous plants are commonly used as grass species. Such as clover in the legumes, alfalfa and so on. Poaceae grass species such as rattan grass, bluegrass and so on. The most commonly used in production today are alfalfa and rattan grass.
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