First, the sowing time is generally late September sowing winter snow red, late July sowing fall snow red. According to specific varieties of characteristics, edible requirements, stubble arrangements and other conditions to determine. Second, planting method 1. Seedling: seedling is an important step in the cultivation of potherb mustard. Seedling soil should be very fertile, preferably composted with farmyard manure one month before seedling. Till well before the seedling and use sunlight to achieve a certain sterilization effect. Soil should be selected in a relatively thin place, the seed should not be buried very deep, 2-3cm can be, so that the seed can be very good absorption of soil nutrients, breathing air, is conducive to faster nursery success. 2. land preparation: the plant transplanted soil requirements are not high, fertile on the line, the land is still composted, the base amount should be larger. Secondly, the land should be leveled into strips, drainage should be good. Each strip is controlled at 1.5 meters wide, and the middle drainage ditch is controlled at more than one foot wide to ensure that it is easy to walk during daily management. Removed weeds and so on should be taken away, not compost, otherwise it is easy to produce germs.3. Planting:Planting time should be earlier. At this time the best vitality of potherb mustard, high survival rate, time control in 8-10 points or so. It is better to have a certain amount of soil on the fixed seedlings, which can effectively protect the seedlings. It is recommended to transplant them around 12-15 centimeters. At this time, the seedlings are just entering the growth stage, and too dense is not conducive to growth. Transplanted seedlings should be kept at a distance of 20-30cm, and a certain amount of water must be poured after transplanting.4. Fertilizer:Fertilizer is a decisive factor in the late growth of the snow red, so the fertilizer must be sufficient. General nitrogen fertilizer and phosphorus and potassium fertilizer together, mostly nitrogen fertilizer station. In order to ensure the growth of seedlings in the early stage, a certain amount of urea can be applied, and a small amount of fertilizer should be applied in a timely manner after one week of planting. The middle period is the most diligent time to fertilize, generally need to apply 2-3 times. No need to fertilize half a month before picking. After each application of fertilizer, the soil should be sprayed with an appropriate amount of water according to the dryness and humidity of the soil.5. Insect prevention:This is the snow red need to pay attention to the place, easy to reduce production. The main damage of snow red is mostly focused on insect pests, such as aphids, which occur frequently and are not easy to find. Generally found that the leaves of the snow red has a tendency to change color, to check the plant in time. Insect pests should be removed with chemicals as soon as the species is found, as they are difficult to detect manually. Other diseases are rare, as long as humidity and water are not too high. Extended information:The main pest control methods for snow red are virus diseases and aphids.1. Prevention and control principlesTo implement the plant protection policy of "prevention as the mainstay, integrated prevention and control", and to implement the pollution-free prevention and control policy of "agriculture prevention as the mainstay, biological control as the mainstay, reduce chemical control, and advocate physical and biological control". "The principle of pollution-free prevention and control is implemented. Focus on aphids and virus diseases. 2. Pesticide control of viral diseases. At the early stage of the disease, 20% virus A wettable powder 500 times liquid or 2% fungidocarb aqueous 250 times liquid is used together with other virus inhibitors and growth promoters. Control aphids with 10% Yi Quan Jing wettable powder (1500 times) or 0.36% bittersweet aqueous (1000 times). Alternate medication, the use of highly toxic and high-residue pesticides is strictly prohibited.