Prepare seedbed: turn the soil over and sow flat, make a seedbed 1.2-1.3 meters wide. Timely sowing: after spraying the bed surface with water and soaking wet, sow about 700 seeds of cabbage heart per square meter. Inter-seedling and weeding: pull out the overcrowded seedlings, weak seedlings and tall seedlings. Drenching fertilizer: 10 days after the emergence of vegetable heart seedlings, the interval of 4-5 days to apply a fast-acting nitrogen fertilizer, drenching water to adopt drip irrigation.
How to plant and manage cabbage
1, prepare the seedbed
cabbage suitable for greenhouse or cold greenhouse nursery in early spring, to the March 25-30 start sowing, before sowing, the soil will be turned over to sow the flat, per square meter into the fully rotted organic fertilizer 5-6 kg, and then make a wide 1.2-1.3 meters. Then make a seedbed 1.2-1.3 meters wide, and sift the soil as mulch.
2, timely sowing
vegetable heart before sowing, it is recommended to choose the seed size uniformity, high germination rate of the seed, before sowing the bed surface sprayed with water soaking wet, each square meter of seeding 700 or so, and then covered with a layer of 0.3 cm thick fine soil, and again fully drenched in water, 2-3 days after the state of the seedling, when it is cold, you can use a small arbor to keep warm. Use a small arch to keep warm.
3, seedling weeding
Vegetable heart sowing density is large, easy to grow or infected with pests and diseases, after sowing should be timely inter-seedling, per acre to stay seedling 2-2.2 million, will be too dense seedling, weak seedling, high-footed seedling pulling out, to maintain a 15-20 cm spacing, combined with the inter-seedling clean up weeds in the field, to reduce the consumption of nutrients.
4, drenching fertilization
Vegetable heart growing period for the high water requirements, in the drought immediately to the field drenching, drenching so that the water droplets evenly sprinkled in the bed and leaf surface, sunny days morning and evening drenching once, the climate is hot, to avoid the midday drenching, and the cabbage heart 10 days after the seedling, it should be intervals of 4-5 days of fast-acting fertilizer once. The first step is to make sure that you have the right amount of nitrogen in the right place.