While the greenhouses bring us economic benefits, we are constantly improving the construction of greenhouse equipment. The greenhouse soil is also a part of the construction we need to build. As the use of greenhouses gradually increases, the soil problems of the old sheds are also revealed. Although the soil is easily destroyed, we can fix these soil problems one by one as long as we have a purposeful and planned adjustment.
What are the problems with the old shed soil? How to fix it?
1. Fertilizer use problem
The extensive use of chemical fertilizers and the soil problems caused by the innocent treatment of organic fertilizers are not uncommon. Excessive application of chemical fertilizers will bring toxic substances such as heavy metals; as time accumulates, soil pollution will become more serious. At the same time, long-term large-scale single use of chemical fertilizers will also cause soil acidification and toxicity. The organic fertilizer made from manure and plant residues can be harmlessly treated, which will cause the pathogens contained in these organic fertilizers to multiply, which will harm the soil and also cause disease damage to vegetables and other crops.
Therefore, in the issue of fertilization, we should do soil testing and formula fertilization to improve the phenomenon of blind fertilization. In the production process, supply on demand, that is, what is missing, what to make up; not only can improve the efficiency of fertilization, but also save costs. At the same time, the use of bio-organic fertilizers should be vigorously promoted, and the beneficial micro-organisms and the like contained therein can enhance soil fertility, improve soil structure, and enhance soil microbial activity. In the actual use process, bio-organic fertilizer can be used, and the proper ratio of chemical fertilizer can make the soil have a benign development trend. In the case of top dressing, the water-soluble fertilizer that absorbs the utilization rate should be selected, and the effect is obviously excellent as a top dressing; for the old shed, irrigation methods such as drip irrigation and micro-spraying should be adopted.
2, pesticide residues
The use of pesticides is improper and the concentration is too large. Pesticide residues caused by factors such as the purchase of unqualified pesticides can also cause damage to the soil. The use of pesticides is either seed dressing or soaking; whether it is spray or watering, it will more or less intersect with the soil. Some of the pesticides that come into contact with the soil are degraded, and some of them remain.
Therefore, in the choice of medication, we must choose efficient and safe pesticides, disable highly toxic, high-residue pesticides. At the same time, agricultural friends should learn more, improve their medication technology, and standardize their medication standards.
3, improper watering problem
Sewage watering, toxic water source irrigation Needless to say, it will cause soil pollution, so when you quote the water source, you must first check the water quality. The agricultural friends who have not done this well should be quite few, so I won’t go into details.
4, covering soil and changing soil
If the pollution is really serious, the soil can be deep-turned and repeatedly exposed to kill the pathogens in the soil, promote the evaporation of residual organic matter, or bury the contaminated soil or excavate the surface soil for soil replacement.
5, the use of the film
The use of mulch is quite common and the scope of application is wide. However, the inferior mulch film tends to have a weak nuclear tensile strength and is also prone to aging, which is difficult to clean up after crushing, thereby forming a residue. Therefore, when purchasing the mulch film, the mulch film not less than 0.008 mm should be purchased according to national standards, and this cost cannot be saved.
6, the use of improver
For heavy metal pollution, organic improvement substances such as straw, peat, livestock manure, and humic acid fertilizer can be applied to the soil to make the pollutants inactive. Adding affordable, phosphate and other modifiers to form a chemical reaction with heavy metals. Soluble matter.
The above is about the introduction of the repair of soil problems in the old shed. The greenhouse cultivation facilitates the supply of various fruits and vegetables. Therefore, the benefits brought by the cultivation in the greenhouse are good, and we should also pay attention to its soil and other issues, so as to ensure the greenhouse. Can bring high yield crops.
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