After the orangery enters the winter, it goes to sleep. All kinds of pests and diseases are in the dormant winter. It is necessary to timely carry out pest and disease management and reduce the number of wintering pests and diseases to ensure the quality and yield of the orangery. China Pesticide Network Xiaobian gives everyone the support to manage the wintering orangery, to prevent pests and diseases:
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First, the winter clear garden. Grab the winter leisure and thoroughly clear the garden, and concentrate it on the burning, or pile up the fertilizer in the place away from the orangery. It can eliminate many germs and pests that have been wintering in these places. For example, the leaf miner is suffering from old worms or mites. The edge of the leaf curls over the winter; the aphids and scale insects overwinter with leaves or weeds on the leaves or weeds; the gems and the worms overwinter in the trunks or branches. Various germs are often hidden in diseased plants or litter. Therefore, before the germination, the winter shears should be combined, the pests and branches should be cut off, the dead trees should be removed, the weeds should be removed, and the mosses and lichens on the trunks should be scraped off to eliminate the wintering pests and their places on the trees.
Second, cultivating loose soil. According to the pesticide network , pests such as flower buds and chafers usually hunter in the soil for winter, and fruit flies and scorpions are wintering in the soil. Therefore, during the wintering period, the garden soil can be turned over to make fruit flies, flower buds, etc. Pest larvae and mites cause mechanical damage, or die due to environmental discomfort, effectively reducing the number of insect populations in the orangery in the coming year.
Third, the white seal hole. Use 0.5 kg of lime, 0.5 kg of sulphur powder, 200 g of rosin, 50 g of salt, and 20-25 kg of water to make a slurry. When used, firstly brush the white and dry branches, then apply white. If the crack on the trunk is large, or there are tree holes in the tree, the wormholes should be cemented, or the wormholes should be blocked with cement, fine river sand, or fresh cow dung, hair, lime, and yellow mud mixture. It can also be blocked with 80% dichlorvos emulsion, or 5-10 times of 40% dimethoate, and then plugged into the wormhole.
Fourth, scrape the wound. For the bark of orange tree that is damaging to resin disease, the diseased part should be scraped off, and the wound should be disinfected with 75% alcohol and then applied. The medicinal agent has 75% carbendazim WP 100 times solution, or 1% antibacterial agent 402, etc., and can also scrape off the lichens, moss, and rot of the foot rot and the citrus tree. Apply a protective agent.
Fifth, pesticide control. In combination with the clear garden, the pesticide manufacturer recommends using 80-100 times liquid oil spray, adding quick killing, ketone and Other acaricides will have better effect, can effectively kill winter insects, rust tick, red Pests and other pests, but also can control lichens, moss and soot. In the winter, the canopy can also be sprayed 1-2 times with a 0.6-0.8 Baume aqueous solution of stone sulphur. If the scale insects are serious in the orangery, it is recommended to spray 10 times of the rosin mixture. Note that the rosin mixture and the stone sulphur mixture should be used for more than 15 days to prevent phytotoxicity. Then apply 5%-10% tea dry water or lime. Water, killing larvae of various pests that overwinter in the topsoil or in the soil. 