Citrus yellowing, soil fertility is not afraid
It is difficult to cure the yellow disease. Once infected, it can only cut trees to avoid the expansion of immunity. Although fertilization can not be corrected, it can effectively enhance the disease resistance of citrus.
New garden control acid and alkali. Adjust soil acidity and alkalinity. Apply acidic conditioning agents or acidic fertilizers to pH 7 soil to adjust soil pH.
Increased carbon fertile soil. Improve soil texture by deep turning, adding organic matter, supplementing fertilizers, etc., permeable to water, water and fertilizer.
Intercropping between young gardens to enhance micro-ecological stability. Natural grass, no-tillage; regular castration cover, around the embedded tree tray; the canopy crops between the rows of 30 cm outside the canopy drip line, increase soil microbial activity, improve the ecological balance and stress resistance of the root zone.
The adult garden deep turns over the hole. Deep-expanding and deepening points are combined with soil acidification control and soil improvement. Generally, after the autumn shoots are stopped, they are carried out outside the drip line outside the canopy. The depth is 50-80 cm and the width is about 40 cm. Cut the root system in the ditch (cavity), layer back to fill the soil conditioner for embedding green manure, bio-organic fertilizer, biochar, etc. When backfilling, the topsoil is placed in the middle layer, and the heart soil is placed on the upper layer. By gradually turning outwards every year, the soil compaction is reduced, the soil water, fertilizer, gas and heat are coordinated, the root system is rejuvenated, and the fruiting period is prolonged.
Grass cultivation. In autumn and winter, ryegrass, broad beans and peas are the main species. In the spring, Baixi grass, lotus root, alfalfa, etc. are planted, and the intercropped crops are cut and buried in the tree tray at the right time to increase soil organic matter and soil microorganisms.
Cover and soil. Before the onset of high temperature or dry season, cover the tree plate or the whole garden surface with straw, wheat straw, corn stover, green manure, weeds, etc., cover 10-20 cm thick, and maintain a distance of 30-50 cm from the main trunk to reach soil cooling. Moisturizing effect; when the cultivating or deep turning in autumn, the rotten cover is buried in the soil to increase soil organic matter and improve soil permeability.
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