grape After the flood damage classification vineyards are flooded, the flooding time, the height of the waterline, and the type of rootstock have different degrees of damage. The longer the time, the higher the waterline, the more serious the damage. Kyoho and other cutting seedlings damage will be more important than SO4, Beida and other rootstock grafted seedlings. Generally flooded within 6 hours of light water; 6 to 12 hours for mild damage, grape hairy roots (fine white root) began to damage; 12 to 24 hours for moderate damage, fine white roots basically died, brown The hairy roots began to be damaged; 24 to 48 hours were severe scabies, and yellow fibrous roots were dead; 48 hours or more were extremely severe. Preventive measures: Moderate and mild damages mainly include cracked fruit, white rot, sunburn, and burning. At the same time, attention must be paid to rapid restoration of the grape root system. Heavy and over-preserved trees should be used to protect the trees. Some fruits, branches and leaves should be cut off. The heavier, the more cut off the part, reduce transpiration, reduce the pressure on the grape roots. Remedial measures After the rain stops, it is necessary to drain in time and consider whether or not to cut off the fruit and leaves according to the time of flooding; when there is 1 cm of water in the local area, use humic acid products rich in fulvic acid (roads per acre). 5 to 10 kg can be applied or sprayed to increase root activity. Or after the retreat of water in a timely manner, while foliar spraying fulvic acid and other organic acids to prevent severe acute gas burning after the rain. After the surface is dry, it is recommended to drip or flush high-calcium-magnesium-containing water-soluble fertilizers + amino acids to improve resistance and regulate the soil to prevent cracking and other symptoms from occurring after the flooding (Apply Dr. Ray's brand, 5 kg + peptide Amino Acid 1 Kilograms) must be loose soil permeability after flushing water-soluble fertilizer, 2 to 3 cm deep can be conducive to root respiration and rejuvenation. At the same time, the whole park uses 600 times liquid of Xin Xiu-an to evenly spray the leaves for sterilization. Tangerine Due to continuous rains in the south, the impact on citrus production is relatively large. Normal production of pellet can not keep up with, and many citrus trees grow poorly; due to the inability to fight drugs in time, pest control is difficult, the damage of red spiders is worse than in previous years, and the sunny temperature rises after rain , Acute anthrax is extremely prone to occur; due to the impact of citrus root respiration, citrus roots in low-lying or flat ground are affected by the accumulation of stagnant water, causing new roots to slowly grow or roots to die, causing the seedlings to stop growing or die. First, after the rain, the garden should be drained and drained in time to make sure that the heavy rain orchard and the tree tray do not accumulate water. The second is timely supplement fertilizer. As the continuous rain causes the tree to absorb less nutrients and lose fertilizer, it should be combined with loose soil root application of citrus fertilizer or potassium sulfate compound fertilizer and micro-fertilizer, and the crown can be sprayed with potassium dihydrogen phosphate foliar fertilizer and boron and zinc. , Magnesium and other fertilizers. The third is to catch the weather to prevent pests and diseases. After spraying, timely observation and control of the effect, such as rain to make up spray pesticides. Pay special attention to the prevention and treatment of citrus acute anthrax, should cut away the dead branches, together with the leaves to collect and burn, and then spray 1 or 2 times the fungicide, once every 10 days. Pharmacy can be used 40% extermination Wei 500 times, 65% dexamethasone WP 600 times, 50% dexamethasone 800 ~ 1000 times, 70% thiophanate-methyl WP 800 ~ 1000 times, 50% carbendazim 800 times, 50% eutectic WP 500 to 800 times, etc. have a certain effect. The key measure to prevent the latent infection of anthrax pathogens is to spray the pesticide once in the spring, summer and autumn shoots. Once in the month after flowering, spray 2 or 3 times and spray once every 10 days to prevent anthrax pathogens. Invade young fruit. Fourthly, after the rain, the newly planted citrus seedlings were rigged in time, and the appropriate amount of urea was continuously applied around the seedlings on the tree trays every half month of rain or on cloudy days. The foliar application of potassium dihydrogen phosphate foliar fertilizer was applied. Boron, zinc, magnesium and other fertilizers. Dead seedlings should be filled with container seedlings in a timely manner, and low seedlings should be raised and raised. Orchard can not be used in the rainy season in the orchard. It is best to cut grass. Yang Shuizhi tea garden The ditching drainage should be taken care of to prevent the harm of heavy rainfall on the tea plant. After the rain, the drainage should be drained in time to maintain the air permeability of the soil, promote the root development of the tea tree, and enhance the disease resistance of the tea tree. Filling the garden with short-term strong rainfall may cause water and soil loss in the tea plantation, especially in the steep slopes of the tea garden, which leads to the bare roots of the tea tree and is not conducive to the growth of the tea tree. Remove debris and mud in the rhizosphere from the branches, soil from bare roots, and rejuvenate the tea as soon as possible. Timely filling of seedlings For young tea gardens that have been washed away by rain, the fallen seedlings should be righted, the seedlings must be checked for deficiency, and the top dressing should be raised. After pruning the tea plantation timely, the buds grow quickly, and they must be picked as soon as possible, and the faster-growing part of the leaves should be cut off and the tea tree canopy be trimmed. Tea plants that have been severely affected by the pests and have litter can be trimmed as appropriate, and the dead branches cut off. Reasonable top-dressing tea gardens suffer severe damage to the root system and weak absorption capacity. They are not suitable for root fertilization. However, 0.1% to 0.2% potassium dihydrogen phosphate, urea, and foliar fertilizers may be used for extra-root fertilizer application. Once every two weeks or so, even spray 2 or 3 times, until the tree potential rejuvenation, and then the decomposed human and animal manure, cake fertilizer or urea, the top dressing. After the pruning of the damaged tea plantations, organic fertilizer can be used together with some special compound fertilizers for the tea gardens. Apply 200-300 kg of organic fertilizer per acre with 15-20 kg of compound fertilizer. Pruning of heavier tea gardens can increase the dosage per acre, and organic tea gardens should not be applied chemical fertilizer (compound fertilizer). Diseases and pests control high temperature and humidity after wet damage, creating a favorable environment for diseases and insect pests. The disaster-afflicted tea gardens pay special attention to preventing pests and diseases, so early detection and early treatment are needed. Focus on prevention and control of diseases and insect pests mainly consisting of anthrax and small green leafhoppers. 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Post-disaster management of cash crops
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