How Fruit Trees Improve Drought Resistance
1. Covering orchards covered by orchards include film covering and grass mulching. Film coverage is generally conducted in March-April when the spring is arid and windy. When covered, it can be covered or covered only under the tree disk. The main functions of the film under the tree include: optimizing the soil environment, improving soil fertility, inhibiting the growth of weeds, reducing the use of manure, improving the yield and quality of fruits, and reducing the damage caused by overwintering pests. Orchard grass cover can be used throughout the year, preferably in summer (May); dry and thin ground is covered when the soil temperature reaches 20°C at 20 cm. Wheat straw, wheat bran, weeds, leaves, crop stalks, and chopped firewood can all be used to cover grass in orchards. The amount of grass covered in orchards ranges from 1,000 to 1,500 kilograms per mu, and 2000 to 2500 kilograms per mu. The whole park cover grass is not conducive to precipitation as soon as possible into the soil, and precipitation is consumed by evaporation, so the production of tree trays to cover grass, the specific technology is: before the cover grass in the middle of two rows of trees to build a 40-50 cm wide 畦In a raft or a working track, the inside of the tree raft is leveled to make it near the trunk slightly higher, and about 20 cm of space is left around the trunk when the grass is covered so that the water can penetrate into the soil along the trunk and raft as soon as possible after the rain falls; Or deep watering, plant nitrogen fertilizer 0.2 to 0.5 kg, to meet the microbial decomposition of organic matter on the needs of nitrogen fertilizer. The thickness of the grass cover is 15 to 20 cm. After covering the grass, the soil is pressed on the grass slope to prevent wind blow and fire. When covering the grass, it is best to pay attention to fresh coverings after the initial rot in the rainy season. After the grass is covered, it is necessary to pay attention to the spray on the grass to achieve the effect of concentrated trapping and killing of the insects. In the autumn, the fallen leaves and diseased branches of the trees should be cleaned to prevent the early fall of leaves. Disease, leafminer, anthracnose, etc. occur. Second, orchard grass grass orchard is planted in the orchard on the production of useful fruit trees. The Ministry of Agriculture promotes orchard grass cover technology throughout the country. Third, hole storage and fertilizer water and plastic film covering technology hole storage fertilizer water and plastic film covering technology in thin soil, water-free conditions of the hills of the application effect is particularly significant, drought orchard is an important drought, water conservation technology, the specific technology is as follows: the crop straw Or weeds are bundled into straws 15 to 25 centimeters in diameter and 30 to 35 centimeters in length, placed in water or soaked in 5% to 10% of urine. In the crown projection edge inward 50 to 70 cm dig deep 40 cm, the diameter of the storage point slightly larger than the grass handle (the hole is circular around the root), according to the size of the crown to determine the number of storage points, diameter 3.5 ~ 4 meters, digging 4 points; 6 meters in diameter, digging 6 to 8 points. Place the grass stems in the center of the hole, fill it with soil mixed with organic fertilizer (about 5 kg of soil miscellaneous fertilizer per hole, add 150 grams of superphosphate, 50 to 100 grams of urea or compound fertilizer), and pour it in appropriate amounts. Water, and then organize the tree plate, so that the nutrition points below the ground 1 to 2 cm, the formation of a plate, watering 3 to 5 kg / hole can be covered; the old agricultural film cut flat, covered in the tree plate, and Must cover the nutrition points under the membrane, compacted around and in the middle with soil, covering 1.5 to 2 square meters of plastic film per hole, soil pressure on the edge of the plastic film, the center is wearing a small hole on the top of the straw, blocking with stones or soil Live so that you can top-dress water. Put a small hole on the mulch film above the center of the hole for later application of watering or rainwater, and press a small stone on the hole to evaporate moisture. Generally after anthesis (mid-May mid-May), the new shoots stop growing (in mid-June) and 3 times after fruit picking. Each hole is topdressed with 50-100 grams of urea or compound fertilizer. The fertilizer is placed on the top of the grass, immediately afterwards. Watering about 3.5 kg; into the rainy season, you can remove the film, so that the storage of rainwater within the hole; general storage of nutrition can maintain 2 to 3 years, the grass should be changed once a year, found that the film should be replaced after the damage, set the storage again When changing points, gradually realize the improvement of the whole garden. Fourth, the application of moisture absorption agent Moisture absorber is a kind of polypropylene, water absorption and water retention is extremely strong, its water absorption performance is more than 1000 times its own weight, and has excellent water retention performance, in the dry environment, the surface can form a resistance film, prevent the membrane Moisture spillage and evaporation. After a watering or raining, the water can be retained for a long time for fruit trees to absorb for a long time. Because it circulates in the water and the cycle of dehydration and shrinkage can also increase soil porosity, prevent soil compaction, and facilitate root growth and development. 5. Application of Anti-Ventilator In recent years, fulvic acid has been found to inhibit the water transpiration of fruit trees after application to fruit trees. The effective period is more than 18 days, which significantly reduces transpiration and increases water potential. It is found that leaf temperature is not significantly affected. Spraying early will significantly improve the body's moisture status. Fleece Gloves,Fleece Mittens,Ladies Fleece Gloves,Wool Mittens With Fleece Lining HOLIK ASIA GROUP CO.LTD , https://www.holikasia.com