If you dont pay attention to the details, the disease will never stop!

Although there are many factors that cause soil compaction, the main reason is the long-term excessive application of phosphate fertilizer. The greater the amount of phosphate fertilizer, the more excess, the more serious soil compaction. The direct hazards caused by soil compaction are poor soil permeability, underdeveloped crop root systems, malnutrition, physiological barriers root rot, dead tree other soil-borne diseases.

No matter what kind of phosphorus in the phosphorus fertilizer, when it encounters soluble calcium, iron, zinc, manganese aluminum in the soil, it will be tightly combined to form a solid matter that is difficult to decompose, destroying the soil aggregate structure Soil compaction, calcium, iron, zinc, manganese phosphate fertilizer are simultaneously inactivated ineffective. This is the fundamental reason why the utilization rate of phosphate fertilizer is very low, only 5% -20%, it is also the root cause that the greater the amount of phosphate fertilizer is, the less the trace elements are in the crop.

Planting crops does work without phosphate fertilizers, but the current problem is that blind application of excessive amounts of phosphate fertilizers will aggravate soil compaction cause premature decay of crops.

Why does the application of chicken manure, a large amount of organic fertilizer, only can improve the soil, but also increase the soil compaction, causing serious imbalance of water, fertilizer, gas, heat, it is difficult to control the disease? When everyone knows that chicken manure is the phosphorus content of all animal feces When a large organic fertilizer, the answer will come out.

A method to eliminate soil compaction. To prevent eliminate soil compaction, the most important thing is to activate phosphorus to promote soil to form a granular structure.

There are three commonly used methods: One is to increase the application of organic fertilizers, especially crop straws cattle, horses, sheep dung with high fiber content. The straw manure these animal manures decompose after a long period of time contain a large amount of humic acid fulvic acid, which is the choice for activating phosphorus improving the soil, but it takes a long time. The second is direct application of Jiameihong Jiamei Hailibao containing high concentrations of humic acid fulvic acid. It is activated phosphorus, improves soil selection, is also a quick choice. The third method is the application of biological fertilizers. The application of biological fertilizers is more complicated, it is suitable to be mixed with pesticides chemical fertilizers, the soil with low organic matter content is obvious due to insufficient carbon source.

Drugs ignore shed walls roof

In the greenhouse, I often heard the farmers mentioned that they had to take the medicine every few days, there was no shed. What happened was that they were beaten up again again again again, until they became resistant, they still could be cured. This should be blamed on the poor operation of farmers. Indeed, many theoretical situations are considered by them. This is also the cause of repeated diseases. These diseases are basically fungal diseases, other diseases are less.

In fact, the reason is also very simple. The spraying is done very carefully sprayed very thoroughly, but there are some places that are ignored. These places are covered by plastic shed film, that is, the shed wall the roof. There are many water droplets remaining in these places almost all the time, a lot of germ spores are hidden inside. When the water accumulates, the more water drops, it will drop down as the water droplets become a source of secondary infection.

The solution to the secondary infection: it is particularly approved for the use of smoke agent. First, the danger is relatively high. Second, the temperature in the shed is increased, the oxygen is reduced, the plant growth is poor. The Tianbao Agricultural Technology Service Platform (ID: tianbaonj) reminds you to use a household rod-like tool for wiping glass windows before spraying. Wipe the entire inner wall of the plastic film with the chemical solution, wipe it twice, without leaving a dead end. , then spraying, can basically ensure that this crop is no longer infected by the same disease, provided that new fungal spores the like are taken in the outside.

paying attention to watering irrigation

Long-term flood irrigation in the shed has caused soluble saline in the deep soil to spread to the surface with the water, the use of a large number of chemical fertilizers has further aggravated the occurrence of salinization, which often causes the seedlings in the shed to start to die soon after planting. Such dead seedlings are often directly caused by pathogens, but more of dead root seedlings.

It is easy to distinguish after grown plants. For example, the above-ground stems close to the ground begin to grow small pimples, which breeds roots, often because the soil is too heavy to be suitable for root growth respiration. By digging up the soil exposing the root system, I believe most people who have entered the greenhouse know that the fist-sized root system supports plants that are more than one person tall.

Fundamental method to solve the roots: small water diligence, less watering, use sprinkler drip irrigation system, if the plant has been established, reduce the amount of a large amount of elemental water-soluble fertilizer, pure chemical fertilizer, Tianbao Agricultural Technology Service Platform (ID: tianbaonj) recommended flush Organic activated nutrition packages such as humic acid, echinacein water-soluble fertilizers such as Jiamei Bonus, Hailibao, Yinglilai, etc., increase the amount of foliar fertilization, such as Jiamei Melatonin Jiamei Gold Point, which can greatly improve the growth of crops.

There is also the problem of soil. This is only a problem of salinization, but more of the damage to the soil caused by some improper agricultural operations, the most serious of which is the simmered shed. What is the simmering shed? Cotton wool, chloropicrin, methyl bromide, etc., are all indiscriminate, fungi, bacteria, insects, seeds are all killed. After simmering the shed, artificial supplements such as bacteria fertilizers are added.