General information about plants growth in the greenhouse

Planting vegetables should be timely. In the central area of our province, spring and lettuce is suitable in planting period, generally it is in 3 months before and after the spring equinox to the middle, compounded with fertilizer30 kg, boron fertilizer 1 kilogram, zinc fertilizer 1 kilogram, deep plugging, leveling, strip to flat. Planting should choose when sunny morning, and per hole shin compound fertilizer25 kg. Planting depth and soil can fill and level up. After watering, planting density general variety is in 40 centimeters, and the space in the rows is 30 centimeters, planting 4000 ~ 5000 plants per acre.