1. Temperature Cabbage likes a mild climate, but it is also resistant to severe frost and high temperature. The suitable temperature during the heading period is 15-20℃, and the adaptable temperature range is 7-25℃; the seedling stage can withstand low temperature of -15℃ and resist 35℃ The above high temperature; germination is at least 2~3℃, and it takes about 15 days to emerge. The suitable temperature for germination is 18-20℃, and it can emerge in 2~3 days. Above 25°C, the assimilation is weakened, the respiration is enhanced, and the plant's own consumption increases, reflecting the yellowing of the base leaves, the growth of the shortened stems, the loosening of the bulbs, and the decline in quality and yield. 2. Humidity The water content of the heading cabbage plant is 92~93%. During the heading stage, the soil has more water and the air is humid. However, it can tolerate certain drought and humid climates in the seedling and rosette stage. Generally speaking, the cabbage is in The relative humidity of the air is 70~80%, and the relative humidity of the soil is 60~70%. The soil moisture content is another restrictive factor for the yield of cabbage. If the soil moisture is insufficient, the relative humidity below 50% will seriously affect the growth. Balls and lower yields, such as soil moisture higher than 90%, will cause hypoxia in the roots of the plants, resulting in disease and plant death. The relative humidity of the air has little effect on the growth and development of cabbage. Three, light Cabbage is a long-day crop. Before vernalization is completed, long-day sunshine is good for growth. It has a wide adaptability to light intensity and a low light saturation point of 30~50KLx. The four seasons of sunlight in the southwest and south subtropical regions can meet the needs of growth. Four, soil nutrients Cabbage is a fertilizer-loving and fertilizer-tolerant crop. It absorbs more fertilizer than ordinary vegetables. It requires more nitrogen fertilizer in the seedling and rosette stage, and more phosphorus and potassium fertilizer in the heading stage. The ratio is N3: P1: K4. If there is more nitrogen fertilizer, increase the proportion of phosphorus and potassium fertilizer, the head will be firmer, and the net vegetable quantity will increase. Disclaimer: Some articles on this website are transferred from the Internet. If the legal rights of a third party are involved, please inform this website for processing. phone
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