Planting and yield of Castor

The planting time and yield of castor vary from region to region, sowing in South and Southwest China from March to April, sowing in East China and North China from April to May, sowing in winter, spring and summer in Southwest China, and sowing in winter in tropical South China; the yield per mu varies from 200 kg to 500 kg, and the yield per mu is mainly affected by planting management technology, climate, environment and other factors.

The following points should be paid attention to when planting and managing castor beans:

1. It is necessary to select, soak and disinfect castor seeds before planting.

Before sowing, the castor was dried for 2-3 days, the damaged and infested seeds were removed, put into a plastic container, soaked in 45 ℃ warm water for 15-20 hours, the soaked seeds were removed and placed in a sieve basket to control water for 30 minutes, and then mixed with 50% carbendazim wettable powder, the powder dosage was 5 ‰ of the seed dry weight, and the seeds were evenly mixed and dried.

two。 Sprouting of castor

The treated seeds of castor were germinated at a temperature of 25 ℃ and turned every 6 hours. After being exposed, two true leaves were grown in a nutrition bowl containing formula fertilizer and transplanted into the field.

3. Planting of castor

In the planting field of castor, 2000 kg of organic fertilizer was applied per mu, urea 10kg and diammonium phosphate 10kg were ploughed and leveled immediately, and then ridges with 80cm width and 20cm high were built, and drainage ditches with width and 30cm depth of 30-35cm were dug between the ridges; castor plants were burrowed in the middle of the ridges and spread a layer of AM fertilizer matrix in the holes, and the castor seedlings were planted in the holes and watered thoroughly.

4. Field Management of Castor

More nitrogen fertilizer was needed in the early stage, and phosphorus and potassium fertilizer was mainly applied after flowering. To cover the nest with plant ash mixed with fine soil after sowing, it is necessary to set seedlings in time, weed and cultivate soil by ploughing, topping, coring and pruning. In addition, it is necessary to control the common Fusarium wilt, leaf blight, bacterial spot, cotton bollworm, diamondback moth and castor armyworm in time.