What's the difference between planting in April and Shanghai green? What are the planting methods and time?

Planting time is different: April vine is sown from early October to late October. Shanghai green is a variety of Chinese cabbage, which can be planted all year round in Shanghai. Summer is too hot to maintain, and the growth state can't be controlled. Generally, it is planted in spring and autumn. Shanghai green is easy to sprout, and can be planted in northern areas in spring, summer and autumn.

Planting method of Shanghai green: choose good land and plant it in sunny and ventilated places. Before planting Shanghai Green, some basic fertilizers can be applied to ensure the nutrients of the land. After sowing, it is necessary to properly water and fertilize, at least twice a morning, but it can be properly watered once after Shanghai Green appears. Generally speaking, urea and compound fertilizer are the main fertilizers for greening in Shanghai.

At the same time, it is necessary to do a good job in pest control. Shanghai green often suffers from leaf blight during maintenance, so it needs field management of Ajiqiang and can also be disinfected with carbendazim.

April slow planting method:

1. Seedling raising: Make the seedling raising land into a 2m-wide border (flat ditch), and use decomposed organic fertilizer 1000kg per mu. Sow in the first ten days to the last ten days of 10, and the dosage of seeds per mu is 0.3 kg, which is even and practical after sowing. After emergence, interplanting should be done for 2 ~ 3 times, and appropriate topdressing should be applied. When the seedlings grow to 6-7 true leaves, they can be planted in the field.

2. Soil preparation: After ploughing in the field, apply 50 kilograms of special compound fertilizer for vegetables per mu as base fertilizer, and make a border (even ditch) with a width of 2.5 meters for planting.

3. Greenhouse seedling raising is slower in March than in1late October, and slower in May than in early February to late March. Plant spacing is slow in March 10× 15cm, April 15× 15cm and May 15× 20cm.

4. Field management: topdressing once after planting live trees, and applying 5 kilograms of urea per mu. Apply it for the second time before the warehouse is closed, and apply 7.5 kilograms of urea per mu. Pay attention to prevent aphids in March.

5. Harvesting: Harvesting in open field in March is slower than that in late February to late March, harvesting in greenhouse in April is slower than that in late March to early April, and harvesting in May is slower than that in late April to early May. Remove the roots with a kitchen knife and clean vegetables will be on the market.

The difference between April Slow and Shanghai Green

The leaves are different: in April, the slow leaves are oval and the leaves are dark green. The green leaves in Shanghai are oval, and each leaf is bright green. After comparing the two, we can still tell who is slow in April and who is green in Shanghai.

Petiole colors are different: April Slow and Shanghai Green are both rape, but the varieties are different and the appearance is very similar. They are waist-tied, the stems are like spoons, the leaves are green, but the petioles are different in color. The petiole of April is light green, and the petiole of Shanghai green is also turquoise.

The bolting time is different: it is not easy to bolting in April and early spring, but it starts bolting in February in Shanghai and grows best in March. Judging from the bolting time, Shanghai green bolting was earlier.