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However, there are some quality problems in the compound fertilizers sold in the market: some compound fertilizers do not meet the nutrient content. If a farmer buys a compound fertilizer with a nutrient content of 30%, the price seems cheaper, but after the quality inspection department measures it, the actual The content is only 15%; some use compound fertilizer as a compound fertilizer, and its nutrients are not refined by sputum cooperation; the compound fertilizer products in the agricultural resources market are numerous, chaotic and miscellaneous, which makes people dazzled and the farmers have no choice; Pulling the nutrient content high, creating a vague concept, is actually the sum of a large number of elements and trace elements, in fact, the proportion of a large number of elements is very low; some of the organic matter content is also counted as the total nutrient content, so that the total nutrient The content is indicated to be 60% to 70%, which seems to be higher than the high content of inorganic compound fertilizer, which gives people an illusion; some only have the total nutrient content, no indication of NPK content; some manufacturing processes Rough, not too high in water content or muddy in water content.
Farmer friends should be careful when buying, beware of being deceived.
First of all, we must carefully select the brand. Although there are many brands of compound fertilizers, there are imported, domestically produced, nutrient content is also different, there are organic compound fertilizer, there are bio-organic compound fertilizer, there are amino acid compound fertilizer, but there is a big principle is to choose brand products. First, in the local agricultural resources department to see the fertilizer announcement announced by the Provincial Department of Agriculture, the approved fertilizer brand can be bought with confidence; second, whether the fertilizer is printed with the national (or provincial) exemption mark, whether there is a registered trademark Whether there is a registration number; three must obtain an official invoice for the purchase of fertilizer, and save it.
Second, we must clarify effective nutrients. According to the relevant regulations, effective nutrients generally refer to the effective content of a large number of elements N, P, K. The higher the three nutrients, the higher the effective nutrients. When buying fertilizer, be sure to carefully consider the effective content of a large number of elements. Although some compound fertilizers are equipped with trace elements or organic matter, the proportion of a large number of elements is correspondingly reduced. They have advantages in terms of comprehensive benefits and also have potential for increasing production.
Third, we must use the compound fertilizer. First, we must look at the growth period of crops, choose compound fertilizer, choose high-content compound fertilizer with long growth period, and choose low-level compound fertilizer with short growth period. Second, we should choose compound fertilizers such as watermelon and horse bell. Tobacco, etc. avoid using chlorine-containing compound fertilizer; Third, according to the characteristics of crops, other fertilizers should be applied. For example, green leafy vegetables should be supplemented with nitrogen fertilizer, and cotton, especially hybrid insect-resistant cotton, should be doubled to supplement potassium fertilizer.
Huaxian Agricultural Technology Promotion Center Lu Shuguang
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Precautions for purchasing compound fertilizer
In recent years, due to the relatively complete nutrient content of compound fertilizer, the long-lasting fertility, the convenience of application, and the significant increase in production have gradually been accepted by farmers.
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