Five points for winter cotton pests
The prevention and control of cotton pests in winter has less labor, less investment, simple methods, and high efficiency. The following five key points should be mastered. Clearing is to clean up the pastoral area. Cotton bollworms, red spiders, aphids, thrips, and blind fleas can overwinter on dead branches, fallen leaves, bells, and weeds left over from the cotton fields, completely removing dead branches, fallen leaves, and falling bells, and eradicating the impurities around the cotton fields. Grass can effectively eliminate the above wintering pests. Eradication should be centralized, burned in time or buried in a timely manner. Turn deeper into the soil. Helicoverpa armigera, ground tiger, Spodoptera litura, bridge-building moth, etc. in the soil in winter, can be implemented to turn soil to kill. The soil is required to have a depth of 30 to 40 cm. The topsoil is turned to the bottom, and the subsoil is turned to the top. The overturned large earth blocks are not broken so as to facilitate winter weathering. Irrigation is the irrigation of insects. Irrigation on the basis of earth turning can more effectively kill overwintering pests in the soil. Irrigation should be carried out on the "39" days, and it should be thoroughly irrigated. Generally, the irrigation volume per mu is 80 to 120 tons. Fill the clay a little bit more, and the loam can be a little less. The irrigation method is suitable for furrow irrigation, so that the water slowly infiltrates the room and avoid flooding. Smoke is the agent fumigation. Red-bottleworm, anthracnose, carrageenan, red rot and other pests can be attached to the seed for wintering. Fumigation of drugs can kill 98% of the red bollworms and some pathogens in the cotton seed. The method is to store the disease first. The gap is sealed with a sticker, and 32-37 grams of methyl bromide is used per cubic meter of space, sealed and fumigated for 3 days. Extinction eliminates the source of insects in storage sites. The cotton bollworm mainly hides in the gap between the four sides of the flower storage warehouse and the ginning factory. Therefore, the four walls of the flower plant can be sprayed with lime slurry and filled with gaps. Drying tools must be washed with boiling water. The stencils and wastes of the ginning factory should be promptly removed, fattened or burned. Surgical Gelatin Sponge,Hemostat Gelatin Sponge,Absorbable Gelatin Powder,Hemostatic Absorbable Gelatin Sponge Shaoxing Aladdin Enterprise Co.,Ltd , https://www.xhemostat.com