The application of uncooked organic fertilizer has many harmful effects: 1. Burning the root system. Farmyard manure mostly comes from animal dung. When these organic fertilizers are not cooked, their nutrient status is slow, and they cannot be directly absorbed and utilized by the roots of fruit trees. If they are applied, in the process of subsurface decomposing, they easily cause heat to cause root burns (commonly known as “burning rootsâ€). Root rot caused. 2. The nutrient release is not in sync with the need for tree fat. For example, in the fall, unfermented organic fertilizer is applied. Because of the low soil temperature, it takes a long time to decompose underground. In the spring of the second year, the tree needs a lot of nutrients, and the limited organic nutrients released by the slowly decomposing organic fertilizer can not meet the needs of the tree. At the same time, the microorganisms will also consume some of the nutrients (such as nitrogen fertilizer) originally found in the root soil of the fruit trees during the decomposed process. The trees often show malnutrition. After entering summer and autumn, the rainfall increases, the ground temperature rises rapidly, the decomposing speed accelerates significantly, and more organic nutrients that can be absorbed by the tree are released, resulting in accelerated tree growth, massive strips, poor fruit coloring, and excess nutrient growth. Poor flower bud differentiation, so that a large number of organic nutrients are wasted, and the nutrient supply to the tree is imbalanced. Some people once surveyed the excavation of orchards applied to raw manure and found that some of the raw manure remains in its original state after 3 years. 3. Invoke pests that go underground in winter. Unripe organic fertilizer contains a large amount of animal organic matter, which makes it an ideal wintering place for many fruit tree pests. It is particularly prone to infestation of fruit trees such as beetles (cockroaches), peach borerworms, ulnar catfish, boat-shaped caterpillars, and pear flower vines. Pest control is extremely unfavorable.
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