Green vegetables need a lot of fertilizer. Generally, it is suitable to use decomposed organic fertilizer, such as chicken and duck manure, pig and cattle manure, cake fertilizer, etc. After 30-40 days of fermentation, they are fully decomposed to kill bacteria and eggs, and then applied. It is necessary to furrow and fertilize, and cover the soil after fertilization to avoid fertilizer pollution to the stems and leaves. Plant vegetables to prevent pests and diseases. In the field, there are many crickets and aphids. They specialize in eating the seeds of vegetables. Therefore, when the seeds germinate, properly water the surrounding area with pepper water, weed artificially, and never use pesticides. If you want to plant green vegetables on a large scale in rural areas, you really need certain planting techniques. You can use insect-proof nets and insect-stained boards to eliminate insects on vegetable leaves.
After harvesting vegetables every three times, deep ploughing should be carried out. If it is impossible to avoid repeated cropping, it is recommended to carry out deep ploughing after each harvest and dry the ground for not less than 3 working days. In this way, the harmful flora in the soil of field plots can be dried and weeds can be eliminated. If you plant leeks, green onions, garlic or onions in a small garden, you can sow plant ash at different times. For example, just after the leek is harvested, fresh stubble is sprinkled with plant ash, which can not only provide rich natural potash fertilizer, but also grow fast, and new buds are drilled overnight.
The sowing date of each vegetable will have a cycle, and some vegetables will have several suitable sowing dates, so we must know fairly well. For example, cucumber can be used as greenhouse cultivation in early spring, early cultivation in small arch shed, open cultivation, continuous cropping cucumber, cucumber in late autumn and protected cultivation in autumn and winter.