There are good ways to improve the benefits of cotton planting
Summarizing the experience of cotton planting in various places in recent years, we will improve the conventional cotton planting technology to achieve "one increase" (improved purity of fine seeds) and "five improvements" (improved seed treatment, improvement of planting density, improvement of pest control strategies, and improvement of fertilization. With the pruning technology and the change of single planting as the interplanting and multiple cropping techniques, the benefits of cotton planting are still considerable when considering the current cotton price and the varieties of planted insect-resistant cotton. This will save 40 yuan per acre of pesticides, save 13 labor, more than 10 kilograms of mu production, increase 300-400 yuan per mu. Improve seed purity. The conventional insect-resistant cotton can be selected from No.37, No.41 and No.45 Zhongmiansuo, No.16, No.17, No.18, No.21 and No.22 from Luyan Cotton, No.668 and No.33B and No.32B from Xinmian, and there are Lufenmian cotton from hybrid insect-resistant cotton. No. 20, 23, 24, 25, No. 38, No. 39 and No. 29 of China Cotton Institute. At present, it is worth noting that a large number of species with high purity and a few species with mixed degradation account for the majority; some individuals buy cottonseed oilseeds from oil and cotton mills at low prices, and after packaging, they sell the fine varieties at high prices and injure farmers. Planting rolled oilseeds generally reduces production by 2 to 30%. Do a good job in seed treatment to ensure that "one seedling will be broadcast." In order to ensure "one seedling seedlings," we must do a good job of seed treatment. Seed treatment is mainly sun seed, seed soaking and chemical seed dressing. About 10 days before sowing, choose sunny sun for 3 to 5 days to reach full dryness. Do not dry on cement floors, iron utensils, etc. so as not to affect germination. The best choice for coating Son, but the coated seeds should not be sunburned or soaked. Wool cottonseeds are preferably soaked in "three open and one cool" warm soup. If the seeds are poorly formed, they can be soaked in cool water for 36 hours and water changed every 12 hours to prevent burned seeds. Soaking time is 3-6 hours longer than non-Bt cotton. The soaked seeds were removed and the excess water was controlled. The 3% carbofuran microgranules were mixed at a weight of 5:1 between the dry seeds and the pesticide. The mixture was mixed and piled for 1 to 2 hours before sowing. According to many years of experiments, the seed after the above treatment can emerge as early as 1 to 3 days, more seedlings 5% to 12.4%. Moderately reduce the density, reduce the number of control. In the land with good water and fertilizer conditions, conventional insect-resistant cotton has a large row spacing of 90 centimeters, a small row spacing of 50 centimeters, 2500 to 3500 plants per acre, a hybrid insect-resistant cotton line of 100 centimeters, a small line of 60 centimeters, and 2000 to 3000 plants per acre. It is appropriate. Most of the insect-resistant cotton varieties are not as strong as non-insect-resistant cotton. They are prone to premature senescence in the later period, and the number of chemical control and dosage should be appropriately reduced. Conventional insect-resistant cotton is generally firstly controlled at the end of June or early July. It uses 1 to 1.5 g of dildodomamine per acre, or 4 to 6 milliliters of auxiliaries, and sprays the top of 40 kg of clean water once; A strong cotton field can be sprayed with the first dose and method 5 days after the topping. The growth of hybrid insect-resistant cotton is stronger. The first time in the bud period, the use of dilute amine 1 to 1.5 grams per mu, or 4 to 6 milliliters of auxiliaries, spraying 40 kg of water on the top of the lid; after flowering When there is a prosperous growth, use 6 to 8 ml per mu, or 1.5 to 2 grams of dildoamine, and apply 1 spray to the top of 50 kg of water. After 5 days of topping, use the 1st dose of medicine. Quantity and methods are sprayed again. According to the characteristics of pest occurrence, change the control strategy. After the planting of insect-resistant cotton, the damage to the cotton bollworm was effectively controlled. The cotton bollworm was reduced from the main pest to a secondary pest, and cotton aphid, cotton spider mite and other pests were raised from the secondary pests to the main pests. In the case of pest changes, cotton aphid and spider mite must be the focus of prevention and control, as well as other pests. In general years, the second generation of cotton bollworm does not require chemical defense, and the second and third generation bollworms can be combined to prevent and treat pests such as cotton aphid and red spider. In the year of the outbreak of bollworm, the second generation of bollworm should be properly guarded against, and the top of the cotton plant should be protected. The third and fourth generations of bollworms focus on the protection of bolls. During the entire birth of cotton, we must pay great attention to the protection and use of natural enemies, try to delay the time of chemical defense, and reduce the amount of medication. Improve fertilization techniques and simplify pruning measures. Before sowing, reasonable formulation of various fertilizer ratio, fertilizer dosage, application method and use period, to achieve balanced fertilization; appropriate early fertilizer time and pay attention to the use of potash, can effectively prevent premature aging. Simplifying pruning can save a lot of labor without affecting production. Only hit the top of the heart, do not fight the side, keep the vegetative branch method, so that save a pruning labor per acre of 7, the work value of 105 yuan. Change to a single planting, for intercropping. Winter wheat, early mung bean, watermelon, vegetables and other crops have a shorter symbiotic period with insect-resistant cotton and less insecticide-resistant cotton fields. After intercropping with these crops, the mu income can be greatly increased, generally higher than pure cotton fields per acre. 150 yuan or more. In the case of poor wheat seedlings this year, it is a way to increase revenues by interplanting cotton crops in accordance with local conditions. The bearing structure, fixed film systems and installation of this greenhouse is relatively simple. And due to it, raw material and manufacturing costs are affordable. Except the high strength woven film is higher, other kinds of antidrop film are economical. In general, the comprehensive cost of film greenhouse is lower 30% ~ 50% than the same size and specifications of the other types of greenhouse. Single Span Greenhouse,Greenhouse Film,Tunnel Greenhouse,Plastic Film Greenhouse JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.greenhousehydroponic.com