A, cabbage suitable for growing environment

1, temperature

Cabbage is a kind of semi-hardy vegetables, like cold weather. Cabbage has different temperature requirements in different reproductive periods, the appropriate temperature for seed germination is 20 ℃ ~ 25 ℃. At the optimal temperature and keep the soil moist conditions, seedlings can emerge 3 days after sowing. If the temperature is too high and the climate is dry, it will cause seedling virus disease.

If the temperature is too high during the growth of cabbage, it is easy to make the leaves grow longer and prone to diseases; if the temperature is too low, it will lead to slow growth and delay the molding time. In the appropriate temperature range, the daytime sunshine is sufficient, photosynthesis is strong, which is conducive to the production of cabbage nutrients; the night is cold, the temperature difference between day and night is large, which is conducive to the storage and accumulation of nutrients.

2, light

In the nutrient growth stage, cabbage needs sufficient sunlight. Cabbage in the growing season requires an adequate supply of water, from sowing to harvest, only to ensure that the cabbage adequate water supply, photosynthesis can be carried out smoothly.

3, water

? Cabbage in different growth periods have different water needs. Seedling water requirement is not large, but when the soil moisture content is less than 10%, it will affect the germination of seedlings; too wet soil permeability is poor, is not conducive to seed germination and emergence. After watering, attention should be paid to timely plowing to keep the topsoil of the field loose and dry, and the hypolimnetic soil must be kept in a good water-holding condition.

? Planting cabbage plots should have good irrigation conditions and drainage systems, both timely and sufficient to ensure that the water requirements of cabbage, but also quickly remove excess water in the field after the rain.

4, soil

Cabbage is suitable for growing in deep soil, good water retention, good drainage, fertile and soft soil, high organic matter content of sandy loam, loam or clay loam. Soil pH should be neutral or weakly acidic, alkali over the soil is not suitable for cabbage growth.

Two, cabbage planting method

1, dilution: when 2-3 true leaves, the first dilution; the second seedling's 5-6 leaf stage; 7-8 leaves can be set. Select different row spacing and plant spacing according to different varieties, and leave 1 strong seedling in each hole.

2, chasing fertilizer: cabbage planting into live, you can start chasing fertilizer. Every 3-4 days chase 15% decomposition of human feces and urine once, 4-5 copies per mu. Mix human feces and urine with water according to the weather and soil dryness and wetness. When the cabbage enters the rosette stage, the concentration of fertilizer should be increased, usually every 5-7 days, chasing 30% decomposed human feces at 15-20 kg per acre.

After the start of core wrapping, reapplication of trailing fertilizer and increase in potash are necessary to increase yields. This application of fertilizer to the farmer is known as "core-filling". Once the plants have matured, there is usually no need for additional fertilizer, but if the base fertilizer is insufficient, urea can be applied appropriately between rows.

3, loosen the soil: in order to facilitate the pursuit of fertilizer, the soil should be loosened at an early stage and weed 2-3 times. Especially after a long period of rain, the soil should be loosened in time to promote the growth of the root system. The middle of the rosette combined with the ditch application of cake fertilizer and soil, the ridge height of 10-13cm.