The planting method of Shanghai Green

Shanghai green it is a kind of cabbage, it can provide vitamins and minerals needed by the body, regular consumption of human blood vessels, skin and eyes have great benefits, but also can play a very good role in inhibiting ulcers, now on the market Shanghai green is also deeply loved by everyone, so today we will learn the cultivation method of Shanghai green bar.

1. Select improved varieties

Now there are many varieties of Shanghai green, so we generally choose suitable varieties according to the planting season and planting area. In summer, we usually choose varieties with strong disease resistance, high temperature resistance and drought tolerance, while in autumn and spring, we can choose varieties with higher normal yield, so that we can guarantee the yield and quality of Shanghai green under the most basic conditions.

2. Soil preparation and fertilization

Shanghai Qing has no requirements for the selection of planting land, but it is best to plant in a place with sufficient water and convenient drainage and irrigation. At the same time, the viscosity of the soil should not be too heavy, otherwise it will cause various diseases. The soil should be relatively fertile and the transportation is convenient. When preparing the soil, deep ploughing should be carried out, sufficient manure or livestock manure should be sprinkled and stirred evenly, and then the width should be about one meter and five meters to two meters, and finally the ditch should be made to facilitate the later field operation.

3. Scientific sowing

Now Shanghai green basically can be planted all year round, planting method is generally used broadcast or drill, first we need to water the land thoroughly, and then the seeds evenly scattered on the land, or according to each row 30 cm distance from the ditch, the seeds evenly scattered in the ditch, covered with soil cover seeds, when the temperature is not very high, can be covered with a layer of grass or plastic film, used for moisture and heat preservation.

4. Field management

Before Shanghai Green has not yet emerged, it basically needs to be watered twice a day. After emergence, it only needs to be watered once. When it grows three to four leaves, it needs to be thinned to ensure reasonable density. In the whole process of Shanghai green growth, it is necessary to apply fertilizer many times, mainly compound fertilizer, urea and phosphorus fertilizer. According to the growth situation of Shanghai green, appropriate amount of fertilizer should be applied. When Shanghai green leaves turn yellow, fertilizer should be applied in time, otherwise death will occur.

5, pest control

The diseases and insect pests of Shanghai Qingqing mainly include leaf blight, downy mildew, aphid and cabbage caterpillar. The peak period of leaf blight and downy mildew is generally in summer when it is high temperature and rainy. First of all, we need to strengthen the management of the field. Secondly, we can use chemical agents to reproduce illegally. Generally, Bordeaux mixture or carbendazim can be used for prevention and control. Aphids and Pieris rapae will exist at every stage of Shanghai green growth, mainly harming the leaves of Shanghai green, we can use trichlorfon or dimethoate EC to spray.

6. Timely harvest

Shanghai green can not let it grow too big, otherwise the taste will become bitter, let people have no appetite, so generally in Shanghai green grow to have ten to fifteen leaves when it should be timely harvest, followed by Shanghai green it can be harvested in batches, each time the large harvest will be retained small, so that the next time you can continue to harvest, improve economic benefits, and land resources are fully utilized.