1, spinach
Spinach is a cold-tolerant vegetable, seeds can germinate at 4℃, the optimum temperature is 15-20℃, the optimum temperature for vegetative growth is 15-20℃, the growth is poor above 25℃, and the aboveground part can tolerate the low temperature of -6-8℃. Spinach is a long-day crop. Under the condition of high temperature and long sunshine, plants are easy to blossom at jointing stage, and the requirements for sunshine intensity are not high, so they can be interplanted with tall crops. ?
2.cabbage
Cabbage is hardy, likes cold climate and is suitable for growing in cold season. If cultivated in high temperature season, it is prone to pests and diseases, or the quality is poor and the yield is low, which is not suitable for summer cultivation. Its low temperature resistance is very strong.
After the temperature reaches -3℃, if the temperature can be gradually increased, the growth can also be resumed, but after reaching -8℃, if the temperature continues to drop to about-1 1℃, the normal growth cannot be resumed and it will suffer from freezing injury.
Step 3: peas
Pea is a semi-hardy crop, which likes mild and humid climate and is not resistant to dry heat. Pea is a long-day crop, which likes temperature and has poor drought resistance. Pea has wide adaptability to soil and low requirements for soil quality. Sandy loam and loam with strong water holding capacity, good aeration and rich humus are the most suitable. The ph value is 6.0-7.2.
4.celery
Celery is a cold-tolerant vegetable, which needs cold and humid environmental conditions and does not grow well under high temperature and drought conditions. Celery needs different temperature conditions at different growth and development stages.
5. Mustard
Potherb mustard likes cool climate, and the suitable growth temperature is 15-20℃. When the temperature is higher than 25℃ or lower than 15℃, the growth is slow and fine. At high temperature, the fiber substance increases and the variety decreases. At low temperature, the potherb will not freeze to death.
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