Three look at identifying biological organic fertilizer

Bio-organic fertilizer is one of the products with the highest technical content in the new type of fertilizer. in recent years, it has been recognized for its unique effects of promoting growth, disease prevention and disease resistance. According to the research, the key factor for the obvious effect of bio-organic fertilizer is "live + special function + microbial bacteria". Because its technology is too strong, the detection technology of general fertilizer "administrative supervision department" can not keep up with the detection technology, which leads to the mixing of fish eyes and pearls in the market. Farmers can't tell. The research team of "overcoming the obstacles of soil continuous cropping" of Zihuan College of Nanjing Agricultural University has been engaged in the research on the prevention and control of soil-borne diseases of cash crops such as watermelon, cucumber, tomato, pepper, eggplant and yam for a long time, and designed a set of identification methods according to experience. For reference. See if the packaging is standardized? product registration certificate: with the microbial fertilizer registration certificate number of the Ministry of Agriculture (Note: provincial departments do not have the right to register). The correct method: "microbial fertilizer (registration year) clinical word (number) number" or "microbial fertilizer (registration year) accurate character (number) number". Product technical index: effective live bacteria (CFU) ≥ 20 million / g, the Ministry of Agriculture is only allowed to mark ≥ 0.2 billion / g and 0.5 billion / g at the time of registration (strictly stipulated that this value must be reached on the last day of the shelf life). In order to cater to the market, some enterprises deliberately mark it as tens of billions of dollars, which is unscientific (the current technology is very difficult to achieve) and wrong. The validity period of the product is more than 6 months as stipulated by the state. With the extension of the preservation time of bio-organic fertilizer products, the number of effective living bacteria will continue to decline, so it is irresponsible to mark the validity period for too long. See if the material is uniform? the water content of the product is too high or too low is not conducive to the survival of bacteria, judgment method: grab a handful of fertilizer in the sun to observe, Yin Tide mass, dry ash are not normal products. The "organic fertilizer nutrition" suitable for the growth of special functional bacteria should be set meal type, which is composed of a variety of organic nutrients (such as rapeseed meal, soybean powder, etc.). The traces of raw materials can be seen in light, or the special smell of raw materials can be smelled. See if the effect is efficient? test method: add a small amount of water to adjust the bio-organic fertilizer into a ball, freeze it in the refrigerator into ice, take it out the next day to melt, repeat three times, the bacteria in the fertilizer will freeze to death or greatly reduce; at this time, use it to compare the original product and observe the difference in the same field, the difference is obviously good fertilizer, the difference is not obvious, indicating that there is something wrong with the product, it is recommended to give up use.