Planting time of kohlrabi

Mustard, also known as turnip, mustard and mustard knot, is a variety of mustard. Mustard requires high temperature, and generally low temperature is easy to lead to its death, so the planting time is mostly concentrated in summer and autumn.

If you are in the south, you can start planting in July, and the farther north, the later. If you are near the Yangtze River, you can start planting around August. If you are in the north, such as Henan, you can start planting around 10. Planting after 10 is not recommended.

Mustard should be harvested in stages, each harvest should be large and small, and the plant type should be uniform and suitable. Shepherd's purse is sown in early autumn, and 10 ~ 13 leaves are harvested 30 ~ 35 days after sowing, and then harvested 4 ~ 5 times in stages, and the yield per mu is 2500 ~ 3000 kg by the end of March of the following year. The autumn shepherd's purse sown in early October of 65438/kloc-0 takes 45 ~ 60 days to start harvesting. Shepherd's purse, which was sown in late February, was harvested and put on the market in early April. Spring sowing is generally harvested 1 ~ 2 times, and the yield per mu is about 1000 kg.

Extended data:

Pest control of kohlrabi

1, black spot disease

Mainly harmful to leaves, the lesion is round or nearly round, light brown to brown, with obvious concentric rings (cabbage) or no concentric rings (mustard), surrounded by yellow halo. When the disease is serious, the lesion converges, resulting in partial or total death of the leaves and easy perforation of the lesion. The above two diseases are fungal diseases.

Control method: 75% chlorothalonil 500 times solution or 58% metalaxyl manganese zinc 500 times solution plus Zhilong spray, spray 2-3 times every 7- 10 day.

2. Soft rot

This is a bacterial disease, and bacteria often invade from wounds. At first, it was an infiltration spot of water immersion, and then it gradually expanded, causing decay and mucus outflow, and the affected area gave off a bad smell.

Prevention and control methods: 72% agricultural streptomycin 3000-4000 times solution or neophytomycin 4000 times solution plus plant dragon spray once every 10 day, continuous prevention and control for 2-3 times.

3. Virus disease

Commonly known as mosaic disease, the main symptoms are bright veins and mosaic, leaf atrophy, plant dysplasia, root dysplasia, and yellow-brown root section.

Prevention and control methods: prevention first, the aphids in the media should be eliminated, and drugs should be used for prevention and control at the initial stage of the disease. Use 20% virus A500-fold solution or 1.5% plant disease ling No.2 1000-fold solution plus plant dragon spray once every 7- 10 days for 2-3 times in a row. insect pest

4. Aphids, Pieris rapae and Plutella xylostella can be sprayed with 500-600 times solution of Plutella xylostella or 2 1% disinfectant solution of 2000 times and 1, 000- 1, 500 times solution. Pay attention to spraying evenly and thoroughly, and control it 2 ~ 3 times according to the insect situation.

References:

Baidu encyclopedia-kohlrabi