What are the disadvantages of farmyard fertilizer? What is the cause of seedling burning?

The so-called farmhouse fertilizer usually refers to various organic fertilizers produced by various farms, including human and livestock manure, poultry manure, pond mud, stove ash, grass and wood ash.

There are many kinds of dead leaves, garbage piles, manure, etc., and so on. The disadvantage of farm manure is that there will be a middle of larvae, which will affect the yield of crops at that time, and it would be better if this problem could be overcome. The use of farmyard manure can improve the soil structure and increase the fertility of the land.

To meet the needs of all kinds of crops of various nutrients, with farm fertilizer to grow food, vegetables and fruits, good quality, good feeling, small pests and diseases, no hormones, small drug residues.

Although <> farmyard fertilizer contains a wide range of nutrients, the content is relatively small, and the fertilizer effect is slow, which is not conducive to the direct absorption of crops. Farm manure needs to be used together with chemical fertilizer in order for the nutrients in the fertilizer to be fully absorbed. The edible parts of the stems and leaves of the "nitrogen fertilizer vegetables" produced by excessive nitrogen fertilizer are seriously polluted with nitrate, which will multiply the nitrate content in the vegetables and then convert them into nitrite.

Nitrite is a highly toxic substance.

Raw manure has a natural fermentation process in the soil, in which heat is generated as well as methane.

Harmful gases such as ammonia and ethylene can acidify the soil and damage the root system, that is, root burning, causing crops to wilt and die. When too much fertilization is applied, the concentration of elements in the soil will become high, resulting in the water concentration in the soil being greater than that inside the plant rhizome, so that the water of the rhizome cells is discharged outward, so that the whole plant dies, which is the farmer's mouth of burning seedlings.

The more farmyard fertilizer is applied to a certain extent, the more beneficial it is to the soil, the premise is that the farmyard fertilizer must be rotten, and it is best to apply it together with beneficial biological bacteria, which is of great significance for the restoration and improvement of the soil! It can not only supplement the nutrient requirements of crops, but also improve the physical properties of the soil, which is the best fertilizer requirement for crop planting.

Disadvantages: the composition of farm fertilizer is more complex, the effect of fertilizer is different, the decomposition in the soil is relatively slow, the effect is not the same, compared with chemical fertilizer, the amount used is larger, and the cost performance is not high. Reason:

It is because the amount of fertilizer is too large, resulting in a lack of water in crops, too high heat, and seedling burning.

Disadvantages: The nutrients contained are relatively comprehensive, and most of these nutrients are in an organic state, which is difficult to be directly absorbed and utilized by crops. Cause: The farmyard manure is too thick, so that the moisture in the soil cannot enter the root system, and the water in the roots flows out.

<> organic fertilizer will not burn seedlings, but if it is not rotted and used too much, it may cause seedlings to burn. Organic fertilizer has a long effect, can generally be used as base fertilizer, can be applied before sowing or transplanting, and then the soil is shallowly turned over again, or the use of strip application, hole application and other methods of application, such as Shenpei fruit after the application of the soil is dry, can be watered in an appropriate amount. Bring back blind.

Fertilizer seedlings are burned because of excessive fertilization.

To prevent not burning seedlings, the fertilizer should be selected appropriately, the fertilization should be appropriate, and the fertilization position should be more than 3 cm away from the seedlings, so that the roots will not be burned!

This is caused by the serious excess of chemical fertilizer content in the soil, that is, fertilizer damage, you can properly water the soil with too high concentration, clean the soil at the roots of seedlings to avoid secondary burning of seedlings.