1 pea is a semi-hardy crop, which likes mild and humid climate and is not resistant to dry heat. The cold tolerance of round pea is stronger than that of wrinkled pea, and the initial temperature of seed germination is lower, which is 1-2℃ for round pea and 3-5℃ for wrinkled pea. But seeds germinate slowly at low temperature. The seedlings have strong cold tolerance and low temperature. The suitable temperature for seedling stage is 15-20℃. The lowest flowering temperature is 8-65438 02℃. The optimum temperature for flowering and pod setting is 15- 18℃. Begging for pod maturity 18-20℃.
Peas are not suitable for continuous cropping. Continuous cropping will have toxic effects on subsequent peas and aggravate the occurrence of pests and diseases, so peas usually have to rotate with other crops. White flower varieties are more taboo than purple flower varieties, and the rotation period needs to be longer. Peas can also be mixed and intercropped with other crops.
The main diseases of pea are root rot, brown spot, powdery mildew, brown streak and so on. The main pests are liriomyza sativae and liriomyza sativae. The harvest time is determined according to the eating method. Generally, grain peas are harvested at 15 ~ 18 days after flowering, dry peas are harvested at Huang Shi, and vegetable peas are harvested at 12 ~ 14 days after flowering when young pods are not bearing fruit.
4. Plant non-leguminous vegetables in seriously ill fields for 2-3 years, and disinfect the seeds at the same time. Soak in cold water for 4-5 hours, then soak in warm water at 50℃ for 5 minutes, then cool, dry and sow. Appropriate close planting and increased application of potassium fertilizer.