The level of production of leeks in open fields has a lot to do with wintering period management, so it is necessary to pay attention to four aspects: One is watering. After the winter, when the temperature was below -5 degrees Celsius, the ground began to freeze, and the leek began to enter the wintering period. At this point, you must pour the frozen water in time. In this way, underground rhizomes can be prevented from freezing damage, and the spring drought can be prevented, laying a good foundation for early spring and long-term spring. Watering is too early, the ground is not frozen, the soil water disperses quickly, and the effect of storing water is poor; watering is too late, the soil is frozen, and the freezing injury is exacerbated after watering, and the roots are prone to hypoxia suffocation and death. Therefore, freezing water is most suitable when the soil is frozen overnight. The second is to re-apply wax fertilizer. Wafer fertilizer can not only increase the temperature of cold, but also have the effect of winter Shi Chun. The wax-fertilizer is good for human fecal urine, and Mushi 1500 to 2000 kg. Third, we must root our soil. During the winter, the soil between the rows is cultivated to the root of the leeks, not only can prevent freezing, but also can loosen the soil and improve the soil permeability structure, which is conducive to the absorption of nutrients by the root system. Usually two or three times during the entire winter. Four to cover. Covering the leeks on the surface with cattle, horse dung or hay can keep them warm, warm and freeze-proof. The use of cattle, horse manure 2500 kilograms or fireweed 250 to 300 kilograms per acre can evenly cover the kimchi noodles.
Car Door Panel
The door on the car is generally composed of three parts: door accessories and interior cover plate.
The door panel belongs to the door interior protection plate system on the car interior,which is an injection molded part, including a handle, map bag and speaker grill areas.
Automotive interior door board is modified PP modified ABS and modified PVC and other thermoplastic modified plastics.
Custom Car Door Panels,Swift Door Panel,Car Door Panel Upholstery,Truck Interior Door Panels
Taizhou Huangyan Xingtai Plastic Mould Co., Ltd. , https://www.xingtaimould.com