Scientific control of cotton is an important scientific measure to increase cotton production. There are three advantages of chemical control technology: First, it is conducive to early-onset strong seedlings, control of high stability, and easy to play to increase the advantages of production; Second, to simplify the management of cotton fields, the provincial holiday; The third is to promote the transformation of the second and third types of cotton seedlings, balanced development Increase production and efficiency. The principle of chemical control is “a small number of multiple times, light and hard control†and should be controlled “over and over and over and over and over and over†or “once in a single interval†(to be flexibly controlled according to soil strength, rainfall, and growth), preferably “once Dosage, divided into three times, "ensures that the plant grows robustly and not prosperously." If the chemical control is not good, it can cause madness or poor seedlings to not affect the normal growth of cotton. Therefore, the use of chemical control agents must be strictly controlled during the implementation of chemical control.
Seed soaking. Most of the current methods for cotton cultivation are for planting seedlings. Before sowing, they use 98% dilute amines (chistocin and formazan) 1g for water and 6kg to 10kg for soaking, and the cotton seeds to be sown Put in the soaking solution and soak for 10 to 12 hours. The seed and soaking solution is suitable for 1:2. The concentration of the sown seeds may be lower, and the concentration of the unfrozen seeds may be higher. After the soaked seeds are dried, Can sow. Cotton seedlings can be promoted as early as robust and prevent underground diseases and insect pests.
Seedling spraying. About 10 days after the cotton seedlings emerge, they reach one leaf or two leaves. One can use 98% dilute amines to 80 kg to 100 kg of water and evenly spray on the top of cotton seedlings.
Seedling spray. When the cotton reaches 8 to 10 leaves and the plant height is 20 to 30 cm, it uses 98% of dilute amine 0.5 to 1 g per mu and sprays 20 to 30 kg of water.
Bud early flowering period. The main stem of cotton is 10-16 leaves and the plant height is 50-60 cm. When the cotton is found to be flowered, it uses 98% of dilute amines 2 to 3 grams per mu, and 15 kg to 20 kg of water, evenly sprayed on top of the cotton plants. It is generally possible to reduce the plant height by 5 to 10 cm. This is the best time to shape the ideal coronal structure, postpone ridge closure, simplify pruning and reduce shedding. Roots can be forced down, adjust the water and fertilizer to make plants strong, early flowering.
Boiling period increases the bell. About one week after cotton topping in the flower and boll period, 98% of dildoamine 4-6 grams per acre is used to control 20 kg to 25 kg of water per acre. The foliar spray is used to control the growth of the upper fruit pods and suppress the growth of axillary buds and enhance the vitality of the axillary buds. , increase the bells, but also coordinate the prevention of premature aging of cotton, protect leaves and promote peaches, increase efficiency, increase production significantly.
Cotton control precautions
1, less amount of dilute amine, it is best to be dubbed mother liquor, and then prepared according to the required concentration, to avoid excessive or too little medication. Its efficacy on cotton is about 15 days, taking care not to break off the period of efficacy.
2, the use of dilute amine to be combined with top dressing, do not give due to medication caused by the dark green leaves and less fertilization. It is best to leave a control line in the field to see if there is a deficiency.
3, control the time. Dinocycline is prone to oxidative decomposition under strong light, which reduces the efficacy of the drug. Therefore, spraying under strong light and high temperature should be avoided. In the summer, it is better to spray under a light after a high temperature in the afternoon, and pay attention to changes in the weather. Spraying at high relative humidity in the field can maximize the efficacy.
4. The cotton leaf absorbs rapidly to the dilute amine and the output is slow. Within 2 hours after spraying, it is a fast absorption period. It can absorb half of the total application amount, slow down in 2 to 6 hours, and basically absorb enough action after 6 hours. Therefore, if it rains within 6 hours after spraying, re-injection is required.
5, the use of plant growth regulators and the amount of use should be based on species, climate, density, cotton growth and water and fertilizer conditions.
6, on the basis of the implementation of chemical regulation, do a good job of phlegm loosening and pruning.
Coptis in the name, the earliest in "Shen Nong's Materia Medica", said: "top grade, a Wang Lian." "Pharmacological" also known as "branch even". Coptis mainly medicinal plants, the country used berberine as the main raw material, developed a large number of proprietary Chinese medicines, but also developed Coptis series of cultural tourism products, such as berberine, aprotrichia stem dishes, berberine feet, bath health products Wait.
Rhizome Yellow Chinese Herbal Medicine
Rhizome Yellow Chinese Herbal Medicine,Chinese Herbal Medicines Coptis,Chinese Herbal Medicines Coptis Bulk
Chongqing Taisun Pharmaceutical Co., Ltd. , https://www.taisuncoptis.com