Rape planting steps

Select improved varieties

Varieties with high quality, disease resistance, high yield and bolting tolerance should be selected, such as Xiaogui, Huaguan, Jinglu No.2 and so on.

Apply sufficient base fertilizer

Under normal circumstances, 3000kg of fully mature farm manure, 20kg of diammonium phosphate, 10kg of potassium sulfate, or 40kg of 45% ternary compound fertilizer will be applied per mu.

Seed treatment

Before sowing, put the seeds in a place with sufficient light to dry for 3 hours for 4 hours, then soak the seeds in 50 ℃ warm water for 20 minutes, then soak the seeds in 20 ℃ ~ 30 ℃ water for 2 minutes, then sow the seeds directly after drying, or accelerate germination under the condition of 15 ℃ ~ 20 ℃ and sow seeds in 24 hours.

Fine sowing

Generally sowing in late March, about 350 grams per mu of seed. Before sowing, water the soil moisture according to the soil moisture, and sow after the water seeps. When sowing, the 1 meter wide border opens 5 ditches with a depth of 1.5 cm and 2 cm, and the seeds are sown evenly in the ditch.

Field management and protection

When the two needles were unfolded (2 leaves and 1 heart), the first seedling distance was 3 cm, and when 4 leaves and 1 heart, the second seedling (fixed seedling) was carried out, and the seedling spacing was 8 cm 10 cm, leaving about 40 000 seedlings per mu. Less water is needed in the seedling stage, and generally there is no drought and no watering. After the seedling is fixed, it will be watered for 3 or 4 times during the growth period, and the watering should be carried out on a sunny day in the morning. Dressing fertilizer once about 15 days before harvest, applying urea 20kg / mu or ammonium sulfate 20kg / mu.

Clear trenches and drain stains

In spring, Rain Water should pay attention to drainage in many areas. Waterlogging not only seriously affects the normal growth and development of rape, but also easily leads to the occurrence and epidemic of diseases such as Sclerotinia sclerotiorum. Therefore, special attention should be paid to the cleaning and drainage of rape fields in spring, especially the cold-soaked fields in mountainous areas and some fields with poor drainage.

Spraying boron fertilizer

Boron deficiency is common in soil, and boron deficiency in rape will lead to flowering and flowering, so attention should be paid to the application of boron fertilizer. There are three ways to apply boron fertilizer: bottom application, topdressing or foliar spraying. For those without basal application of boron fertilizer, foliar spraying was carried out at bud bolting stage and early flowering stage, and boron fertilizer should be sprayed once in rape seedling stage if there was serious boron deficiency in soil without basal boron fertilizer. Boron fertilizer is generally sprayed with 100 grams of borax per mu. After dissolving with warm water, about 50 kilograms of water is sprayed.