Growing time of oil and wheat vegetables

Any vegetable has its own unique growth law, such as cabbage, most of which are planted in autumn and winter and harvested in winter and spring, while hollow cabbage and amaranth are planted at the end of spring and harvested in summer and autumn. Rape is also a kind of vegetables. What is the law of its growth?

Planting time of oilseed rape

Rape is usually sown from August to September, but the development of greenhouse technology can now be planted all the year round.

Seedling raising techniques of Brassica napus

1. Seed treatment: rape seedlings should be soaked and germinated, the seeds were wrapped in gauze and soaked in cold water for about 1 hour, then picked up and placed in 1520 ℃ or in household refrigerator freezer for 2 or 3 days, the seeds were exposed and sowed.

2. Nursery bed preparation: the nursery bed selects plots with high dryness and strong ability of water and fertilizer conservation, which have not been hit with long residual herbicides such as Pushter and Dousulfuron in the previous crop, and apply more organic fertilizer, with a seedbed of 15 square meters per mu of cultivated field.

3. Sowing at the right time: when sowing, mix the seeds with an appropriate amount of fine sand, separate the seeds, and then sow the seedlings, do not sow densely to prevent the seedlings from growing, cover the seeds with 0.5 cm thick mixed with phoxim, and build a shed to protect them from the sun and rain.

4. Seedling management: when the seedlings of rape grow two true leaves, the transplanting density is 6 × 6 cm. Rape seedbed should be kept moist and sunshaded at noon. At the same time, rape should pay attention to pest control at seedling stage.

Field Management techniques of Brassica napus

Rape is generally cultivated in flat beds, and it can be planted when it has 5 Mel and 6 true leaves, and the distance between rows is about 20 cm. Before planting, apply sufficient base fertilizer deeply, generally apply rotten barnyard manure 3000 kg per mu, ammonium bicarbonate 80 kg 100kg, 2 meters even ditch, deep ditch high border. The seedlings were planted with 4-5 leaves at the age of 4-15 cm, the seedlings were robust, and the row spacing was 10-15 cm. Spring sowing open field transplanting, apply enough rotten stable fertilizer, 80 kg ammonium bicarbonate per mu.

After planting, pour enough fixed root water, in case of drought, promote with fertilizer and water, it can be listed in 25-30 days, and the yield per mu is 1800-2000 kg. Autumn sowing is experiencing high temperature and drought season from July to September, and there is often rainstorm. After transplanting, live trees should be watered sufficiently and covered with sunshade net for 5-7 days. If living trees encounter overcast and rainy days, the sunshade net can be removed, and the fertilizer and water are moderate, which is beneficial to the normal growth of rape. It can be put on the market in 20-30 days, and the general yield per mu is 1600-1800kg. Sowing in autumn and winter from October to November, transplanting in the open field from October to November, in case of cold wave attack in December, need to be transplanted in the greenhouse, 25-30 days can be on the market, the yield per mu is about 1500 kg. Apply sufficient basal fertilizer before planting, and apply high-quality barnyard manure 5000kg, diammonium 40kg, urea 20kg, potassium sulfate 20kg or plant ash 200-300kg per 667mz.

Watering planting water during planting, watering enough slow seedling water after one week, watering and flushing seedling fertilizer (urea 15kg), re-applying plant promoting fertilizer (urea 30kg) in the later stage, ploughing and deep hoeing in time after planting slow seedling were beneficial to squatting seedling and promote root development. Keep the field moist and the soil loose throughout the growth and development period. The management method of planting is basically the same as that of lettuce, so it is necessary to strengthen fertilizer and water management, not only to maintain sufficient water, but also to prevent water stains caused by excessive wetness, and to do a good job in the prevention and control of diseases and insect pests.

Harvesting and storage of rape and wheat

Harvest. After planting, it can be harvested in about 30 to 50 days according to different conditions, and it will be longer in winter. Harvest time in summer in the morning, winter greenhouse should be carried out at night, you can use a knife in the plant near the ground to harvest, break off yellow leaves, diseased leaves, bundles or baskets can be sold. If long-distance transportation is carried out, pre-cooling should be carried out, or ice should be placed in the packing box (freezing damage can easily occur around the ice).

The suitable storage temperature of stored rape is 0 ℃, and the suitable relative humidity is more than 95%. For storage or transportation, it is required that the quality of rape should be high, the leaves should not be too tender, the moisture content should be low, and should be harvested and put lightly during harvest to avoid mechanical damage.

In the current era of highly developed science and technology, rapeseed can be grown all the year round, but like all vegetables, vegetables that conform to the laws of nature always taste better than those that break them, so, if it is for your own consumption, do the right thing at the right time!