How to avoid fat damage in spring fruit tree topdressing
Spring is the time when fruit trees sprout and bloom. At this time, fruit trees need a lot of nutrients. Therefore, fertilization in spring is very important. Most fruit farmers are also used to topdressing in spring. However, some fruit farmers found that the young leaves and buds of the tree were atrophied and dried after 1 to 2 weeks of fertilization. The flowers and young fruits atrophied and fell off, and the bark of the back strips showed watery ulceration. In severe cases, all the big branches died or even the whole tree. Body death, causing serious damage. The main reason for this phenomenon is the burning of fertilizer. The occurrence of fertilizer rooting is basically consistent with the depth and distribution of roots in fruit species. The northern peach trees are most prone to fat damage, followed by apples, oranges, grapefruits, pears, grapes, chestnuts, jujubes and other fruit trees. To avoid fat damage, you can take the following methods. First of all, we must choose the correct fertilization method. At present, in the actual fertilization of fruit trees, the fruit farmers use acupoints (4 holes in 4 directions around the tree body), radiation ditch, annular ditch fertilization method or whole garden application. However, the author generally does not recommend the use of acupoints, especially peach, apple, citrus, apricot and plum, but also other shallow roots. Fruit tree fertilization is best applied in combination with decomposed soil and fertilizer. When using annular groove and radiation ditch, pay attention to the application of too deep or too large a distance; the fertilization of the ditch should not be fertilized in the direction of extension of the root (in contrast to the direction of the big branch), preferably fertilization between the branches; non-repetitive fertilization ( The fertilization area should be changed every year); the fertilization site should not be too close to the trunk. The second is to choose the right fertilizer. According to the stability of fertilizer and the effect of fertilizer on fruit trees, the probability of occurrence of fertilizer accidents is generally ammonium bicarbonate, ammonium chloride, ammonium sulfate > unfertilized farmyard manure > chlorine-based compound fertilizer > chlorine-based compound fertilizer > sulfur-based complex Mixed fertilizer> sulfur-based compound fertilizer. If fattening occurs after fertilization, timely remediation is the key to avoiding greater losses, and there is no chance of delaying treatment. The fat damage should be found in time, and the corresponding large roots should be found in the direction of the branches showing the symptoms of the fat damage. If the root part is black rot, it can be scraped off with a knife; if the root rot is serious, the damaged part can be cut off, and the main body can be rotted to the main body. The cadres cut off the roots and dried the roots for 1 to 2 days to avoid watering the water. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
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