The organic matter content of soil is an important index to measure the fertility of orchard soil, and it is also the basic condition for producing pollution-free fruits. Soil organic matter contains many types of nutrients, which can provide long-term supply of all the nutrients necessary for the growth and development of fruit trees to prevent deficiency of the disease. The lack of soil organic matter is the main reason for the low yield, poor quality and poor resistance of fruit trees. There are several ways to increase organic matter in the orchard soil. First, fall leaves The fruit tree defoliation contains a large number of pests and diseases, and can not be directly covered under the tree. The litter can be cleared in gardens and concentrated into compost, which is then sterilized by high-temperature heap rot and then applied to the orchard. Second, grow green manure or grass An orchard with a small degree of canopy closure can grow green manure or grasses such as alfalfa, clover, soybeans, etc. in the orchard and cut it timely. When planting green manure, enough tree trays should be reserved to prevent green manure from affecting the growth and development of fruit trees. For fruit trees that are 1 year old, the diameter of the tree plate should not be less than 1 meter; for fruit trees more than 2 years old, the diameter of the tree plate should be 30 cm larger than the crown. The amount of green manure planted should be top-dressed to promote growth and increase yield. Third, the park to raise livestock and poultry Orchards can raise livestock and poultry and conduct reasonable breeding and complementary activities. Has been promoted to use the orchard chicken, pigs, geese, rabbits, turtles and so on. Taking chicken as an example, chicken manure is a good quality fertilizer that can increase orchard soil fertility and reduce fertilizer investment. Since chickens like to eat small insects, they can prey on a large number of pests on the ground and fruit tree stems, as well as the pests and eggs of these pests, so that the orchard pests are greatly reduced, thereby reducing the amount of medication, pesticide residues. In addition to the rich source of food in orchards, chickens can eat a variety of live insects, but also can eat grass, etc., which not only save the feed, but also played the role of orchard weeding, but also enhance the chicken population and reduce disease. In this way, the harmful components of pesticides and fertilizer residues in fruit and chicken are greatly reduced, so the quality of the two is good and the selling price is high. Fourth, the orchard covered grass Grass cover in the orchard, turning into soil after rot is the most important way to increase soil organic matter. Generally, 2250 kilograms of dry organic matter is applied per acre, and organic matter content in a soil layer of 0-30 centimeters in orchards can be increased by 1%. Grass cover species include crop stalks, weeds, and litter. The time for grass cover in orchards is appropriate in winter and spring, that is, the grass is moved to cover the orchard during the slack season. After covering the grass, sprinkle some soil on the grass to prevent wind blows and fires. In order to accelerate the decay of the grass, a small amount of urea can be sprinkled in the grass. Generally, 25 kg of urea is sprinkled per ton of hay. V. Clever use of plant ash Grass ash is a good quality potassium fertilizer and soil loosening agent, which can improve the drought resistance of fruit trees, make their branches green and blue, enhance photosynthesis, reduce the loss of flowers and fruits, promote the coloration of flowers and fruits, and improve fruit quality. At the same time, it is also the “Buster†of fruit and tree pests and diseases, which can prevent early defoliation and prevent root rot in fruit trees. The use of plant ash to prevent root rot in fruit trees is to loosen the soil near the roots of the fruit trees and gently remove the rhizosphere soil to expose the roots. Scrape the diseased skin on the roots with a knife and air the roots for 2 to 3 hours. Sprinkle fresh plant ash on the affected roots. The root rot will be eradicated after such treatment, and the normal functions of the fruit tree to absorb water and fertilizer will be restored. Sixth, planting dwarf plants between rows It can be used as a Chinese medicinal material for peony, Atractylodes, Angelica, Codonopsis, Campanulaceae, Bupleurum, Astragalus, Pinellia, Ophiopogon japonicus and Lily among young fruit trees, or in summer, peanuts, soybeans, mung beans, adzuki beans, autumn and early spring. Interplanting cabbage, carrots, kale, garlic and radish will not only increase the economic income of the orchard, but also accelerate the maturation of the soil, reduce the loss of surface water and fertilizer, promote the growth of fruit trees, and realize the combination of land use and land-raising to achieve short-term cultivation. Long purpose. 7. Applying deep ploughing soil conditioner For a long time, due to the indiscriminate application of chemical fertilizers, especially the application of a certain type of chemical fertilizer, the soil structure has been destroyed, coupled with an increase in the index of cultivation and multiple cropping, mechanical rolling and trampling of people and livestock, unreasonable farming, etc. , The permeability of the soil deteriorates, water, fertilizer, gas and heat are difficult to coordinate, and the roots of fruit trees are underdeveloped, which reduces the use of fertilizers, causes serious soil-borne diseases, reduces the ability to retain water and resist drought, and the fruit trees grow poorly, resulting in low yields. Farmers invest heavily and pay less. The no-deep ploughing soil conditioner is a biochemical agent capable of breaking soil compaction, loosening the soil, increasing soil permeability, promoting soil microbial activity, and enhancing penetration of soil and fertilizer. Because it can loosen the soil to a depth of 80 to 120 cm below the surface, it can be exempted from deep plowing, which eliminates the high cost of artificial plowing and mechanical plowing of the land, avoids damage to the roots of fruit trees, and can increase fertilizer utilization by more than 50%. . Where an orchard without deep ploughing soil conditioner is used, the soil is loose, air permeability is good, and the penetration of fertilizer and water is strong. The leaves grow vigorously and the root system is particularly developed. The fruit tree output is greatly increased and the efficiency is improved. Hearing aid manufacturers strive to optimize their wireless hearing aid offerings both in terms of connection reliability as well as power efficiency. Variance across patients and listening conditions can make optimizing wireless hearing aid systems a complex process.
Factors such as connection distance, proximity of reflective surfaces, interference from other wireless devices, and energy loss through body absorption must all be factored into the hearing aid design. For example, indoor wireless performance may be very different from wireless performance experienced outdoors, where the only reflective surface may be the ground on which the hearing aid user is standing. Furthermore, individual differences in body geometry increase the variability that wireless engineers must account for when designing a system that provides each user with a consistent and reliable experience.
As awareness of wireless hearing technology grows, hearing healthcare professionals may notice an uptick in long-term safety concerns. Consumers should be confident knowing that wireless hearing aids are safe and strictly regulated medical devices that meet governmental wireless communication standards in addition to those set forth for medical devices.
Tws Hearing Aid,True Wireless Stereo Hearing Aid,Hearing Aid Earbuds,Smart Earbuds Hearing Aid Shenzhen Sunshine Technology Co.,Ltd , https://www.yatwin.com