1. Timely irrigation or foliar water spraying. For orchards with more convenient water sources, a small amount of multiple irrigation can be used to keep the soil moist. You can also spray clear water on the canopy multiple times before 9 a.m. or after 4 p.m. While cooling the entire canopy, it can also replenish moisture to the tree body, reducing fruit drop caused by high temperature and water shortage.
2. Delayed weeding with mulching tree tray Mulching is a fundamental measure to reduce ground water evaporation. Wheatgrass, weeds, etc. can be fully utilized to cover the orchard with tree trays. The orchard is overgrown with weeds during this period. Do not rush to weeding. You can use weed mulch to retain water and slow down the evaporation of water and reduce the damage of drought.
3. Reduce the amount of pruning. Summer pruning of fruit trees during high temperature and drought will cause new wounds on the branches and increase the transpiration of the tree body, which will definitely increase the damage. If pruning is necessary, some diseased and pest branches, weak branches, and excessively long branches can be properly thinned and pruned, and no thinning, heavy cutting and short cutting are allowed. Reduce water transpiration and large consumption of nutrients, as well as excessive evaporation of leaf water and burns, and slow down the impact of drought on fruits.
4. Increase the frequency of spraying fertilizer on the leaves. When fruit trees encounter high temperature and drought, the photosynthesis of leaves and the absorption of fertilizer by roots will be extremely reduced, and the leaves may even curl up, resulting in deciduous leaves and fruit. In serious cases, it may even cause The growth of branches and roots is restricted, and fruit expansion is forced to stop. Therefore, in the prevention and control of pests, urea, potassium dihydrogen phosphate, borax, superphosphate extract can be added to supplement the lack of rhizosphere fertilization, thereby enhancing tree vigor and improving drought resistance.
The application concentration is: urea 0.2%～0.3%, potassium dihydrogen phosphate 0.2%～0.3%, superphosphate leaching solution 0.3%～0.5%, potassium chloride 0.3%～0.5%, borax 0.3%～0.5%, plant ash leaching solution 0.3%～0.5%, fresh biogas slurry 5%; earthworm globulin "root-strengthening nutrient solution", PBO, etc. are used according to the instructions.
V. Whitening the trunk. Dissolve the quicklime and water at a ratio of 1:10, filter it with gauze, and spray it directly on the trunk and branches with a sprayer, which can reflect sunlight and reduce direct sunlight to the tree body, thereby reducing evaporation. Branches and leaves can be sprayed with multiple Bordeaux liquid (copper sulfate: quicklime = 1:2, water is generally 160-240 times). It can also prevent early leaf fall disease and fruit rot disease of apples while resisting drought, or use 0.03% to 0.05% aspirin solution for foliar spraying, which can reduce water loss, enhance drought resistance, and prevent drought and fruit drop.
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Omega-3 fatty acid is a long-chain, polyunsaturated fatty acid found in plants and marine organisms. Studies have shown that saturated fatty acids have adverse effects on health, while omega-3 fatty acids, as polyunsaturated fatty acids, have many health benefits. Different types of evidence suggest that the decrease of omega-3 fatty acid concentration can cause mood disorders. Some preliminary research results suggest that it can effectively treat a variety of mental disorders, such as bipolar disorder, schizophrenia and dementia. For pregnant and lactating women, it is a safe and effective treatment.
There are eight sources of omega-3: Antarctic krill, seals (seals), deep-sea fish, purple perilla seed, flaxseed, qiyazi (qiyazi), seaweed, South American oil vine and yak.
Fish / fish oil: it should be noted that only deep-sea fish are rich in omega-3. Unlike other three plant products, fish contain cholesterol. People with diabetes, hypertension and other diseases should consult a doctor before consuming fish oil to supplement omega3. In addition, fish is a common allergen, which will cause allergic reactions in many people, including children. If you are prone to allergic constitution before eating, please consult your doctor. Deep sea fish oil is rich in unsaturated fatty acids such as EPA (eicosapentaenoic acid) and DHA (docosahexaenoic acid), which can significantly reduce cholesterol and soften blood vessels. Ruan Guangfeng, an expert of China food and nutrition information exchange center, said that EPA and DHA are the main components of fish oil that play a role in health care for the human body. They come from fish fat. The quality of fish oil is marked by the content of EPA and DHA.
Seaweed: the deep-sea rhynchophyta contains Omega-3. Some deep-sea fish ingest omega-3 because they prey on these algae. Because the existing methods of cultivating and extracting seaweed oil do great harm to the environment, it still needs some time to improve and improve in order to realize commercial production.
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