Natural colored cotton is a new type of high-tech cotton. In the field, the fiber has a variety of natural colors when bolled. Due to its unique rich natural color, it does not need to be dyed during textile processing, and it will not fade after a long time. It does not contain any chemical toxins. It is a green and healthy ecological product that is favored by today's manufacturers and consumers because it has no pollution to humans and the environment and is comfortable to wear. Known as "the second human skin," it to a certain extent represents the development direction of human clothing in the 21st century. However, due to the fact that its main sources are wild cotton species from around the world (or F1 hybrids with white cotton, which are mainly cultivated mainly by artificial cultivation), and some are medium cotton and grass cotton, there are shortcomings such as short fibers and low yield. . Since Jiangshan City introduced the brown cotton (hybrid cotton) from the Crop Research Institute of the Zhejiang Academy of Agricultural Sciences in 1999, after a few years of cultivation, there has been a rich set of cultivation experience. The lint can reach 1200 kg/hm2 or more and will now be produced. The cultivation techniques are described as follows: I. Appropriate sowing, seedlings transplanting colored cotton growth period is generally about 150 days (normal cotton mid-maturing varieties are generally about 135 days), so it should be appropriate early sowing, when the 5cm temperature continuously When you reach 11.5°C or above, you can sow. In Jiangshan City, mulching and nutrient seedlings were planted and planted in the end of March to early April. Strong seedlings are: 1. Prepare fertile nutrient soil. Generally 1000kg fine soil is mixed with 100～150kg fully decomposed organic fertilizer, or apply 2～3kg urea, 2～3kg potassium chloride, and 15～20kg phosphate fertilizer is stored for 10 days; 2. Temperature and humidity. When the cotton seedling grows to one true leaf, the seedbed with a more prosperous seedling must be rid of the sun and expose the film to the sunbed, and the temperature should be properly reduced, and the soil moisture should be kept at 70% spot 80% to control the growth of the seedling. 3. Pouring cotton seedlings. After sowing the cover soil, use the spray bottle to spray the "great-Dabo" brand cotton seedling agent, spray about 100 nutrients 50g, play a role in chemical control, sterilization, fertilization strong seedlings; 4. Prevent pests and diseases. When the cotyledons of the cotton seedlings turn green, look for the situation to use the half-quantity Bordeaux mixture (0.5g copper sulfate, 0.5kg quicklime, 100kg water) on the foliar spray to prevent and control various diseases; 5. Seedlings are transplanted. 3-4 days before transplanting, proper removal of film and seedlings should be carried out to improve the resistance of the seedlings.