How to fertilize coriander without pollution?

How to fertilize coriander without pollution? Please introduce the method of planting in autumn and winter or winter and spring by using the edge of greenhouse, open space, front and back stubble of main vegetables, intercropping and so on. Sowing should be in accordance with market demand and greenhouse planting conditions, and should be sowed at any time in the cold season. Parsley grows well on fertile and loose soil with strong water retention. After the harvest of the previous crop, clear stubble and prepare soil in time to fertilize. Pollution-free parsley should be applied with rotten organic fertilizer 45000-60000 kg / ha and vegetable special fertilizer 300-375 kg / ha. The seedbed should be disinfected before sowing. The seeds need to be disinfected, soaked and germinated by special treatment. Pay attention to heat preservation and moisturization after sowing. After emergence, the ground temperature is relatively low, it is appropriate to less watering, more mid-tillage. When the seedling growth is accelerated, the watering times should be increased appropriately. Fertilizer was applied once when the seedling was 10-15 cm high, and diammonium phosphate or urea was applied to 225-300 kg / ha. Generally, about 50 days after sowing, the plant can be harvested and put on the market when the plant is 20cm to 30cm. Click to get more coriander planting techniques click to get more vegetable planting techniques