Alpha Chitin fertilizer, commonly known as chitin fertilizer, has been widely used in agriculture and has been widely recognized by growers and consumers. Chitin fertilizer has the following characteristics:
1. Alpha Chitin can stimulate plant growth and increase the yield of crops and fruits and vegetables.
2. Alpha Chitin can effectively reduce pesticide residues. In the past, Chinese tea and Ningxia wolfberry were basically unable to be exported due to excessive pesticide residues. Through the use of chitosan oligosaccharides in Tieguanyin tea and Ningxia wolfberry, it was found that chitosan oligosaccharides can effectively decompose organophosphorus pesticides on tea and Ningxia wolfberry. Pesticide residues to meet export standards.
3. Alpha Chitin can increase the sweetness and reduce the acidity of the fruit. After using chitosan oligosaccharides in the growth process of apples, pears, grapes, etc., various indicators show that the acidity of apples, pears, grapes, and navel oranges has decreased, the sweetness has increased significantly, and the content of vitamins has increased by nearly 3-6 times.
4. In terms of green farming, while replacing antibiotics, Alpha Chitin can increase the high-density lipoprotein of animals, reduce its cholesterol and triglyceride content, and become a low-fat food, which is not only safe but also healthy. Chitosan oligosaccharide eggs not only greatly reduce cholesterol, do not contain antibiotics, and the content of lecithin is increased by 100%, and the antibacterial and antioxidant properties are enhanced, which prolongs the preservation period of eggs.
2. The application of chitosan oligosaccharides in biopesticides
Alpha Chitin, as a biological pesticide, namely amino oligosaccharin, was founded by researcher Wang Shikui in 1996. After nearly 20 years of development, amino-oligosaccharide fungicidal pesticides have been popularized and applied on a large scale in my country.
(1) Function
1. Induced fungicides
The antibacterial mechanism of amino oligosaccharin is: under acidic conditions, -NH+3 in the amino oligosaccharin molecule dissociates from the silicic acid and phospholipids contained in the bacterial cell wall to combine with anions, thereby hindering the proliferation of bacteria; then, the amino oligosaccharide Saccharin is further reduced in molecular weight and enters the microbial cells through the cell wall, hindering the transcription process of genetic factors from DNA to RNA, resulting in the complete inability of microorganisms to reproduce.
Therefore, amino oligosaccharins can inhibit the growth of some pathogens, affect the germination of fungal spores, induce changes in the morphology of mycelia, and changes in the biochemistry of the spores.
Amino oligosaccharins can be widely used to prevent diseases caused by viruses, bacteria and fungi of fruit trees, vegetables, underground rhizomes, tobacco, Chinese medicinal materials and grain and cotton crops, such as: mosaic disease, small leaf disease, spot disease, anthracnose, frost Mildew, blight, blight, yellow dwarf, rice blast, bacterial wilt, soft rot and other diseases.
2. Plant growth regulator
Amino oligosaccharins can be used as plant function regulators, which have the functions of activating plant cells, promoting plant growth, regulating the closing and opening of plant resistance groups, activating plant defense responses, and initiating the expression of disease resistance genes. Japan has made amino oligosaccharins into plant growth regulators to increase the yield of some crops. Experts have studied the promoting effect of amino oligosaccharins on cucumber growth, and the results show that cucumber plants treated with amino oligosaccharins not only have enhanced resistance to downy mildew, but also can advance the fruit harvest period by 3 to 5 days, and the yield Significantly improved.
3. Seed coating agent
As a plant growth regulator and antibacterial agent, amino oligosaccharin can induce plants to produce PR protein and phytoalexin. The new seed coating agent developed with amino oligosaccharin as the basic component has great production potential.
Research on the application effect of amino oligosaccharide rapeseed coating formulation, with chitosan oligosaccharide as the basic component, mixed with chemical fertilizers, trace elements and preservatives and other ingredients, prepared into a relatively stable colloid solution and then seed dressing, the effect on rapeseed Seed germination and emergence have no obvious effect, but it can promote the growth of rapeseed, increase the rate of strong seedlings, and increase the yield. The yield increase ranges from 4.33% to 9.67%. Amino-oligosaccharidin seed dressing can significantly inhibit the occurrence of Sclerotinia sclerotiorum, and the control rate of the three rapeseed varieties is 34.19%-44.1%.
4. Crop stress resistance agent
Amino oligosaccharins have good effects on crops’ cold resistance, high temperature resistance, drought and flood resistance, salt and alkali resistance, fertilizer damage resistance, air damage resistance, and nutritional imbalance resistance. This is because oligosaccharins have good effects on the crop itself and the soil environment in many aspects. For example, among the various resistant substances induced by oligosaccharins in crops, some have the ability to prevent, alleviate or repair the adverse effects on plant cells. Harmful effect; another amino oligosaccharin can promote the growth of crops robust, robust plants naturally have a strong ability to resist stress.
Studies have shown that amino oligosaccharins can induce the burst of reactive oxygen species in strawberry cells, and can also induce the increase in the activity of active oxygen scavenging enzymes. Therefore, treatment of strawberry cells with amino oligosaccharins can induce resistance reactions.
Agricultural technology experts have found in practice that: when crop seedlings are wilted due to low temperature and cold damage, the plants will quickly recover after timely application of amino oligosaccharides; Vigorous new roots; when the crops suffer from pesticide damage and the branches and leaves wither, the application of amino oligosaccharins can assist in detoxification and make them quickly pull out new branches and leaves.