Bio-organic fertilizer is a nutrient-rich fertilizer that plays an irreplaceable role in China's agricultural development. According to the study, the key factor for the obvious effect of bio-organic fertilizer is live + micro-organisms with special functions. Bio-organic fertilizer is one of the most technically-rich products in China's new fertilizers. Recently, it has its own unique growth and disease prevention. The anti-disease effect was recognized. Because its technology is too strong, the testing technology of the fertilizer administrative supervision department can't keep up, which leads to the market's imposter, and the farmers are unclear. The Nanjing Agricultural University's School of Resources and Environment has overcame 12 professors and associate professors in the soil continuous cropping obstacle research team. More than 70 master's and doctoral students have been engaged in research on the prevention and control of bio-organic fertilizers for soil-borne diseases such as watermelon, cucumber, tomato, pepper, eggplant and yam, and designed a set of identification methods for reference.
Looking at the material, is it even?
1. If the water content of the product is too high or too low, it is not conducive to the survival of the strain. Judging method: Grasp a handful of fertilizer and observe it under the sunlight. The Yin tide is a group, and the dry and gray are all abnormal products.
2. The organic fertilizer suitable for the growth of special function strains should be a package type, which is composed of various organic nutrients (such as: rapeseed meal, soybean powder, etc.), and can see traces of raw materials under light, or Smell the special smell of raw materials.
Seeing the effect, is it efficient?
Test method: add a small amount of water to adjust the bio-organic fertilizer into a dough, freeze it into ice cubes in the refrigerator, and melt it out the next day. Repeated three times, the bacteria in the fertilizer will freeze or decrease greatly; this is Use it to compare and test the original product, observe the difference in the same field, the difference is obviously good fertilizer, the difference is not obvious, indicating that the product has problems, it is recommended to give up.
Looking at the packaging, is it standard?
1. Product registration certificate: It has the registration number of microbial fertilizer registration of the Ministry of Agriculture (Note: there is no registration right in the provincial department), the correct method: microbial fertilizer (registration year), prologue (number) or microbial fertilizer (registration year) (number) number;
2. Product technical indicators: The number of effective viable bacteria (CFU) is 0.2 billion / gram. At the time of registration, the Ministry of Agriculture is only allowed to mark 0.2 billion / gram, 0.5 billion / gram (strictly, the last day of the preservation period must reach this Value). In order to cater to the market, some companies deliberately mark billions of dollars. This is unscientific (current technology is difficult to achieve) and is wrong.
3. Product expiration date: The national regulations are greater than 6 months. As the preservation time of bio-organic fertilizer products is prolonged, the number of effective viable bacteria will continue to decrease, and it is irresponsible to label the expiration date too long.
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