In recent years, hybrid cotton varieties have been widely promoted in the southern cotton area, and hybrid cotton has generally grown by more than 10% over conventional cotton, but hybrid cotton has reduced 500-800 strains per mu compared to conventional cotton. The width is wide, and the average line spacing is 1 meter, and the width of many cotton lines is 1.1 to 1.3 meters. After the cotton line was relaxed, the cotton closure time was delayed by 10 to 15 days compared to conventional cotton. In order to make full use of the time, space and fertility before the closure of the line, many farmers interplanted watermelons in the cotton line, which could increase the income by about 1,000 yuan per mu. Although watermelon grows, some cotton field weeds are interplanted with weeds, but they prevent the growth of the lower fruit branches of cotton, which is not conducive to the steady growth of cotton. This is because some farmers do not apply herbicides before interplanting watermelons, some herbicides are not suitable for road use, some are under-administered and some are not applied properly, while cotton-planting watermelons are generally covered with plastic film. The temperature, moisture, and nutrients in the membrane are more conducive to the breeding of weeds. As a result, the fertiliser grows and grows. The weeds even puncture the mulch and directly affect the growth and development of the cotton. Because, during the symbiosis between cotton and watermelon, weeds are also symbiotic. Therefore, in the process of intercropping cotton with hybrid cotton, we must do a good job of chemical weeding. Choosing the varieties of cotton gourds There are many types of hybrid cotton on the market. Hybrid cotton is generally recommended as the hybrid cotton. Because of the large individual development of hybrid insect-resistant cotton, the time spent on peach is concentrated, mature earlier and the yield is high, which can alleviate the contradiction between watermelon and symbiosis. For watermelons, early maturing varieties should be selected, such as Zhengza 5, Jingxin 1, Kangshusu, Qingnong 3, and Very Long Milong. The growth period of these watermelon varieties is generally about 90 days. Maturity can be harvested in the middle of the year and there are no serious problems with cotton growth. Weeding Techniques Cotton and watermelon are dicotyledonous crops. Weed herbicides must be selected first before weeding: First, herbicides applied in paddy fields must be avoided; second, we must distinguish herbicides before and after buds; In the seedbed to promote the use of bed grass weeding. Second, we must accurately grasp the herbicide application dose: such as 48% trifluralin EC, 100-150 ml per acre, 48% La Cordo EC per acre of 150 to 200 ml, respectively, watered 60 to 80 kg spray. 72% dole EC 150 ml per acre, 15% fine stable kill EC 50-100 ml per mu, 12.5% ​​Nigra to EC 60-80 ml per mu, respectively, watering 60 kg spray. The third should pay attention to the operation and management: First, we must apply herbicides. Second, trifluralin, Dole, etc. should be mixed with the soil after the application of earthworms and soil into the lower surface of the soil surface, the third is the first spray after the cover film, can not Destroy the layer of the drug film. Fourth, the film on both sides should be solid after the film is covered to prevent the wind from blowing the film and affect the effect of the application. Ffp2 Face Mask,Ffp2 Kn95 Mask,Ffp2 Medical Facemask,Ffp2 Medical Respirator KUTA TECHNOLOGY INDUSTRY CO.,LIMITED , https://www.kutasureblue.com