With the enthusiasm of farmers' agricultural production, the use of fertilizers is now increasing, but many farmers have reported that the increase in crop yields is not obvious. In fact, all of this is related to the common problems in agricultural fertilization. Let's take a look at the common fertilization misunderstandings in the process of vegetable cultivation.
1. Improper fertilization method
Many novice farmers do not understand, applying unfertilized manure, unfertilized manure contains a large number of harmful bacteria, the use of vegetable cultivation will not only provide nutrients, but will endanger crop health.
The improper application of ammonium bicarbonate in production is particularly prominent. Ammonium bicarbonate, commonly known as gas fertilizer, is quickly decomposed and converted into ammonia and carbon dioxide after being applied to the soil. After the concentration of ammonia in the air reaches a certain level, the leaves of vegetables close to the ground are first exposed to ammonia poisoning and yellowing off. When the concentration is higher, the leaves of the whole shed are detached and the vegetables are not harvested.
2. The amount of chemical fertilizer is too large
There are many farmers who blindly think that fertilization is much more, and they can get high output. In fact, if the amount of fertilizer is too large, the soil nutrient reserves will increase greatly, and the amount of fertilizer will greatly exceed the actual absorption of vegetables. This not only causes waste of fertilizer, but also causes acidification of the soil, secondary salinization, high nitrate content of vegetables, and nitrate pollution of groundwater, which seriously threatens the sustainable development of vegetable production.
3. Pay insufficient attention to medium and trace element fertilizers
Medium and trace element fertilizers are essential for vegetable growth. Vegetables are especially sensitive to trace elements, many are harmful, and few are poorly grown. Xiao Bian found in the survey that many vegetable farmers pay insufficient attention to medium and trace element fertilizers, and the application of little or no application causes the imbalance of nutrients to intensify. The lack of some medium and trace elements is more obvious, causing the increase of physiological diseases of vegetables.
4. Insufficient application of organic fertilizer
Organic fertilizer is an important source of soil organic matter, and its insufficient dosage has become one of the limiting factors for the high yield and quality of facility vegetables.
5. Nitrogen, phosphorus and potassium imbalance
In order to obtain higher yields, most vegetable farmers have invested too much elemental fertilizers, and the application rates are not coordinated. In the production, nitrogen and phosphorus fertilizers are often used in high amounts, and potassium fertilizers are insufficient. The small amount of potassium fertilizer leads to poor stress resistance and serious pests and diseases. Excessive use of nitrogen fertilizer can easily lead to a decline in the quality of vegetables.
The above is the common fertilization misunderstanding in the process of vegetable cultivation. The vegetable farmers must avoid making these mistakes during the usual vegetable production process.
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