Orchard application is not detrimental to organic fertilizer

In recent years, it has been found that the application of organic fertilizers has resulted in poor growth of fruit trees. The comprehensive analysis of the reasons is mainly due to the fact that organic fertilizers are not decomposed or not completely decomposed, and the main manifestations are:

First, the root of burns

Farmyard manure mostly comes from animal dung, and it is rich in organic matter. 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 underground decomposing, due to the strengthening of denitrification, heat is easily generated to cause root burns ( Commonly known as "burnt root"), causes root rot.

Second, nutrient release is not synchronized with the need for tree fat

After applying organic fertilizer without decomposition in autumn, soil temperature is low due to autumn and winter. In addition to mixing with the orchard soil, it takes a long time for these organic fertilizers to decompose underground. In the spring of the second year, although the ground temperature went up, if the spring rainfall is less, the applied organic fertilizer will still be slow to decompose. At this time, the tree needs a lot of nutrients to supply the flowering result of the tree, and the slow-compost organic fertilizer The limited organic nutrients released cannot meet the needs of the tree at all. 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 the second year of summer and autumn, with the increase of rainfall, the temperature of the ground rose rapidly. In the previous year, the decomposition rate of organic fertilizer without decomposition was significantly accelerated, releasing more organic nutrients that could be absorbed by the tree, resulting in the tree Faster growth, longer branches, poor fruit coloration, excess nutrient growth, poor flower bud differentiation ability, a large amount of organic nutrients is wasted, and tree nutrient supply is out of balance.

Third, it is easy to provoke underground winter pests

Unripe organic fertilizer contains a large amount of animal organic matter, so it has become an ideal wintering place for many fruit tree pests, and it is particularly prone to attract various types of beetles (cockroaches), peach fruit borers, ulnar crickets, and pear larvae. Pest control is extremely unfavorable.

Solution: First, the organic fertilizer should be tanned in advance to make it fully mature; second, the microbial fertilizer can be mixed and added in the organic fertilizer to promote the effective absorption and utilization of organic matter by the tree; the third is to apply the winter fertilizer in autumn, at the temperature. In autumn, when the humidity is acceptable, it is the growth peak of most of the local fruit tree roots. The organic fertilizer can be decomposed in time and can be absorbed by the tree body to promote tree growth and accumulate sufficient assimilation material for tree growth in the second year. .

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