Due to changes in the structure of the rural labor force, there has been a weakening trend in cotton seedling nursery technology, especially in the quality of seedbeds. In fact, winter and spring are the best time to prepare seedbeds. Therefore, it should be grasped technically. Good “six changes†to improve the grade of cotton seedlings for nutrition and create conditions for the cultivation of early and strong cotton seedlings. Changing the seedbed for the early preparation of seedbed cotton seedbeds is not as good as that for preparing seedlings. Early seedbeds can be used to fully dry the soil. Secondly, some overwintering eggs and larvae can be frozen to death. Three can eradicate and inhibit the growth of part of the weeds. Fertilization, improve soil nutrient status, and increase fertilizer supply capacity. In general, nursery beds should be prepared in winter and early spring before sowing. Changing the old seedbed into a new nursery bed site will use a place year after year. As a result, the bed site will be getting lower and lower; the second will encourage the spread of germs, endanger the growth of cotton seedlings, and should consider replacing the bed site once a year. In this way, it is possible to avoid the decline of the tillage layer and the deposition of germs. The seedbed should be selected where it is sheltered from the wind, has ample water, and is easily transported. In addition, the ratio of reserved seedbeds to transplanted fields should be determined according to local habits of using small oysters, medium oysters, and giant oysters. Promote the use of large seedlings for seedling transplanting. Changing the base fertilizer for the early application of the base fertilizer for the early application of the cultivator bed without applying the base fertilizer or applying the base fertilizer lately wastes the opportunity for soil and fertilizer integration. Change the base fertilizer for the early application of base fertilizer, one can improve the structure of the soil pellets; two can enhance the retention of fertilizer and water retention performance; three can avoid the late application of fertilizer to burn cotton seedlings; four can increase the utilization of fertilizer. To change the application of chemical fertilizer to optimize the application of base fertilizer to optimize the application of base fertilizer, first, the application of well-comprehended organic fertilizers in advance, such as human waste, livestock and manure, can improve the soil fertility level, but also reduce the weed seedbed; second is to match Nitrogen, phosphorus, potassium compound fertilizer, promote balanced supply of nutrients; third, do not use urea as seed bed fertilizer, to prevent the production of toxins rotten seedlings. Extensive replanting of whole seedbeds for the purpose of finely arranging seedbeds for extensively cultivating seedbeds has poor performance in keeping fertilizers and water, and it is difficult to ensure the quality of nutritional soups. Tillage seedlings should be combined with base fertilizers, especially decomposed farm manure and manure urine. After drying the soil, fertilizer should be applied earlier, evenly mixed, and then finished 2 or 3 times. In fact, the hand is pressed into a group, landing is scattered. Change the bare soil and place the bed soil into a plastic film covering the entire seedbed. Before using the seedlings for 15 to 20 days, the used old plastic film should be used to cover the bed soil to prevent rainfall, delay the sowing date, and advance the cover film. After the stop, the film can be sowed. Http://Content/83745cbe-6dba-48a6-a5d3-c368d7369921?cType=2 Frozen Mussels,Frozen Cooked Clean Mussel Meat,Cooked Mussel Meat,Seafood Mussel Meat Shengsi Huali Aquatic Products Co.,Ltd , https://www.mytilus-edulis.com
Improve the quality of cotton seedlings and grasp "six changes"