Which fertilizers are not suitable for vegetables?
First, what is a plant growth regulator?
Plant growth regulators are substances that artificially simulate the chemical structure of plant hormones or are extracted from microorganisms, and have plant hormone activity. Plant growth regulators are substances that have similar physiological and biological effects with plant hormones through artificial synthesis after people understand the structure and action mechanism of natural plant hormones, and are used in agricultural production. By regulating the growth process of crops, the purpose of stabilizing and increasing production, improving quality and enhancing crop stress resistance is achieved.
The range and dosage of plant growth regulators are specified.
Plant growth regulators are widely used in agricultural and forestry production all over the world. There are more than one variety of 100 commercialized abroad, including vegetables, fruit trees, cotton, tobacco, rice, wheat, corn and soybeans.
At present, there are 4 1 species of registered plant growth regulators in China. According to China's "Regulations on Pesticide Management", plant growth regulators belong to the scope of pesticide management, and only those products with pesticide registration and production license can be produced, managed and used.
When using plant growth regulators, we should pay attention to the correct use. In fact, all registered plant growth regulators have their scope of use and dosage regulations, and not one plant growth regulator is suitable for many plants. In addition, the dosage of plant growth regulators is also stipulated. If the dosage exceeds its allowable range, it will not play a role in growth regulation, but will affect the yield and quality of plants.
General classification
Common plant growth regulators are available aminoethyl ester (DA-6), clofenurea, sodium nitrophenolate, brassinolide, gibberellin and so on.
Amino methyl ester (DA-6), clofenurea, sodium nitrophenolate, gentamicin, sodium naphthylacetate and methyl naphthylacetate are used to prolong the dormancy of storage organs.
Breaking dormancy and promoting germination: gibberellin, kinetin, amino ester (DA-6), clofenurea, sodium nitrophenolate, thiourea, chloroethanol, hydrogen peroxide.
Gibberellin, amino ester (DA-6), 6- benzylaminopurine, brassinolide, triacontanol for promoting stem and leaf growth.
Indobutyric acid, naphthylacetic acid, 2,4-D, Bijiu, paclobutrazol, ethephon and 6- benzylaminopurine promoted rooting.
Paclobutrazol, Youkangzuo, Chlormequat, Bijiu, Pixar, Triiodobenzoic acid, Qingxian and Fenxiuning, which can inhibit the growth of stem and leaf buds.
Promote the flower bud formation of ethephon, Bijiu, 6- benzylaminopurine, naphthylacetic acid, 2,4-di and chlormequat.
Inhibition of gibberellin formation in flower buds and regulation of phosphine.
Naphthacetic acid, carbaryl, ethephon, gibberellin, indanate and 6- benzylaminopurine are used for flower and fruit thinning.
2,4-D, DA-6, clofenurea, sodium nitrophenolate, anticonvulsant, gibberellin, 6- benzylaminopurine for flower and fruit protection.
Paclobutrazol, chlormequat chloride, ethephon and Bijiu prolonged the flowering period.
Ethephon, naphthylacetic acid, indoleacetic acid and chlormequat chloride were induced.
Induced production of gibberellin
Preservation of cut flowers: aminoethyl vinyl glycine, aminoacetic acid, silver nitrate and silver thiosulfate.
Gibberellin, 2,4-D, anticonvulsant, naphthylacetic acid and 6- benzylaminopurine were formed in seedless fruits.
Aminomethyl ester (DA-6), clofenurea, sodium nitrophenolate, ethephon and Bijiu for promoting fruit ripening.
Delaying fruit ripening 2,4-d, gibberellin, Bijiu, kinetin, naphthylacetic acid, 6- benzylaminopurine.
Anti-aging 6- benzylaminopurine, gibberellin, 2,4-d, kinetin.
Paclobutrazol can increase amino acid content, resist falling and reach inda.
Improve the contents of protein, clomazone, simazine, atrazine and naphthylacetic acid.
Increase sugar content, increase phosphonomethyl, adjust phosphonomethyl, Pixar.
Amino methyl ester (DA-6), clofenuron, sodium nitrophenolate, Bijiu, indanate and paclobutrazol for promoting fruit coloring.
Increase fat content, naphthylacetic acid, fresh elements, plastic elements.
Abscisic acid, paclobutrazol, Bijiu and Chlormequat can improve stress resistance.
Main points of use
The dosage of 1. should be appropriate, and the dosage should not be increased at will. Plant growth regulators are substances that have similar physiological and biological effects to plant hormones, and cannot be used excessively. Generally, the dosage per mu is only a few grams or milliliters. Some farmers are always afraid that the dosage will be less effective, so they will increase the dosage or concentration at will. This will not only not promote the growth of plants, but also inhibit their growth, and even lead to abnormal leaves, dry and fall off, and death of the whole plant.
2. Don't mix them at will. When many vegetable farmers use plant growth regulators, in order to save trouble, they often mix them with fertilizers, pesticides and fungicides. Whether plant growth regulators can be mixed with fertilizers, pesticides and other substances must be carefully read and tested before it can be determined. Otherwise, not only can it not promote growth, protect flowers and fruits, and supplement fertilizers, but it will cause phytotoxicity due to improper mixing. For example, ethephon liquid is usually acidic and cannot be mixed with alkaline substances; Ammonia methyl ester is easy to decompose when it meets alkali, so it can't be mixed with alkaline pesticides and fertilizers.
3. Use it correctly. Some vegetable farmers often use water directly without reading the instructions carefully before using plant growth regulators. Whether it can be directly mixed with water must be clearly seen, because some plant growth regulators are not directly soluble in water. If the mother liquor is not prepared in advance and then the required concentration is prepared, it is difficult to mix the chemicals evenly, which will affect the use effect. Therefore, it must be diluted in strict accordance with the instructions.
4. Growth regulators cannot be used instead of chemical fertilizers. Growth regulators are not plant nutrients, they can only regulate growth and cannot be used instead of fertilizers. Under the condition of insufficient water and fertilizer, it is harmful to spray too much plant growth regulator. Therefore, when plants are found to be in poor growth, we should first strengthen the management of fertilization and watering, and then use growth regulators to effectively play its role.
5. Plant growth regulators belong to pesticide products, and the product packaging must have a formal "pesticide three certificates" with a yellow label.
6. Use it in strict accordance with the instructions, and take protective measures to prevent it from affecting people and animals and the safety of the cited water.