Winter is the period of differentiation of citrus flower buds. Strengthening the management of citrus orchards is crucial to winning high yields in the coming year. Now the main management techniques are introduced as follows:
Re-applying winter fertilizer before and after re-applying winter fertilizer can supplement nutrients consumed during fruiting, so that it can restore tree vigor as soon as possible, improve photosynthetic efficiency, and promote the formation and development of flower bud primordia. About 10 days before and after fruit harvesting, timely application of organic fertilizer-based fertilizer and the right amount of phosphate fertilizer, urea or compound fertilizer and other chemical fertilizers. The amount of winter fertilizer can account for 1/2 of the whole year's fertilizer, especially the high-yield orchard, and more attention should be paid to increasing fertilization. At the same time, 0.4% urea or 2% superphosphate calcium leachate can be used, or sprayed with 0.5% potassium sulfate, 0.5% magnesium sulfate, 0.1% boric acid, etc., sprayed every 10 days or so. Once, spray 2 or 3 times.
Change soil and promote rooting in December to dig trenches to improve soil, can ripen the soil, improve soil fertility, enhance soil water retention and fertilizer performance, and can update the root system, promote the emergence of new roots, enhance root absorption function. When the soil is reformed, ditch the outer edge of the canopy and cut off the roots so as to facilitate the emergence of new roots. When digging trenches and soil, it can be combined with Shidong fertilizer. In addition, after harvesting fruit, turfgrass, pond mud, and soil miscellaneous fertilizer can also be cultivated in the citrus grove to thicken the soil and protect the roots from cold.
Appropriate pruning can improve the nutritional status through pruning, and promote planting and flowering in the following year. Trimming with light shear is appropriate, mainly cutting off branches, dead branches, cross branches, etc., and timely cutting off the germinating winter shoots to reduce nutrient consumption in the body.
Prevention and control of pests In addition to promptly cutting off branches and parts of the pests, the diseased parts that do not cut off, which can occur on the trunk, can be scraped off by the diseased part and coated with drugs. In particular, attention should be paid to the prevention and control of defoliation anthrax, spider mites, rust spiders, and scale insects.
Cycling and spurring flowers To vigorously growing fruit trees, use a 14- to 16-gauge iron wire on a trunk or a stem, or use a knife to carry out a ring cut, so that a lot of nutrients are transported to the actively growing shoots to promote flower bud differentiation. . The cerclage time is carried out from November to December, and sunny weather should be selected during cerclage. The cerclage time depends on the weather, usually about 20 days.
Cold- and drought-fighting In cold-tolerant and drought-fighting areas, work should be done to prevent drought and drought, so as to avoid falling leaves, affecting nutrient accumulation and flowering results in the coming year. In addition to dressing early, but also available straw, thatch, etc. to cover the ground, trunk and large branches can be coated with whitening agent to protect against cold damage. Before the cold wave arrives, the weather is dry and timely irrigation can also reduce the freezing damage. Http://
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