Causes of apple tree rot disease include: excessive rainfall in the growing season, excess water in the soil, poor drainage, improper fertilization, soil compaction, and low organic matter, leading to poor soil permeability. If the planting is too deep or the soil is too thick and the roots are injured during cultivation, it will easily lead to the occurrence of rot disease and aggravate the degree of damage.
The main diseases that cause rot in apple trees are apple root decay, white feather disease, white feather disease, and purple feather disease. These rot diseases can also harm pears, peaches, plums, cherries and other fruit trees in addition to harming apple trees. The main methods for preventing rot disease are:
Strengthen Cultivation Management and Create Unfavorable Disease Conditions
1 Drain well. Before the onset of the rainy season, dig out the drainage ditch, promptly remove accumulated water and excess water, reduce groundwater level and soil moisture content, and avoid flooding.
2 turn garden fertilization. In September-October after harvesting fruit, deep plowing orchard, heavy basal fertilization, complete use of fertilizers with various elements, farmyard manure and green manure with high organic matter, improved the soil with poor compaction as loose and fertile soil as soon as possible, thereby improving the rhizosphere The soil, water, fertilizer, and heat create good growth conditions for the root system.
3 increase lime. Acidic orchard soil, in the growing season, combined with cultivator weeding, increase the appropriate amount of lime, the pH value is adjusted to 6.5 or more, in order to improve the physical and chemical properties of the soil, create an environment that is not conducive to disease.
4 reasonable load. Too many flowers and trees should be used for sparse fruit thinning and careful cultivation, to protect the roots and root neck from injury, in order to reduce the bacteria infection and enhance disease resistance.
Timely treatment of diseased plants to prevent the spread of diseases
1 Ditching blockade. When the initial diseased plant or diseased plant is few, immediately open a ditch under the drip line around the diseased plant, and pour 5 Baume degree lime sulfur to prevent the root from contacting the roots of nearby fruit trees to prevent the disease from spreading.
2 clear root disinfection. Carried out the tree disk soil examination, the incidence of heavy, saw the roots completely rot, scraping the diseased rot of the cortex and wood, burned concentrated burning. After scraping the diseased area and the surrounding soil, pour 5 Baume degree lime sulfur mixture, dry and then brush 2 to 4 times in the disease Department of rot will be clear, disinfection and treatment; such as the rainy season, should take the opportunity to air 15-20 days , and then covered with disease-free soil reduction.
3 by replacing the root. After the large roots are rotted, after the clear roots are disinfected, three roots with well-developed roots are developed along the main stem and three rootstocks are developed. After the animals are survived, they are connected to the main trunk by means of “receivingâ€, and the rootstock of the new rootstock is used instead of the old ones. Functionality to save dying plants and promote restoration of tree vigor.
4 timely fertilizer. The trees with large roots and rot, in the disease period, due to the serious impact on the absorption, transportation, and exchange of nutrients, resulting in insufficient nutrient of the tree, after the treatment is completed, 300 times of compound fertilizer should be sprayed one time. When the new root grows, topdressing human feces and urine water and appropriate amount of superphosphate are applied one after the other to supplement nutrients and promote new root growth.
Drinking tea is a kind of drink originating in China made from the leaves or buds of the tea plant. Also refers to the leaves of the evergreen shrub tea tree that can be used for drinking tea, and drinks made with these leaves, and later extended to all herbal tea made with plant flowers, leaves, seeds and roots, such as "Tieguanyin" and so on.
Tea, as a famous health drink, is the contribution of the southern Chinese people to the Chinese food culture and the Chinese people's contribution to the world food culture
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