Which is more productive, taro hydroponics or soil culture? Why?

taro, a perennial tuber plant, is often cultivated as an annual crop. The leaves are shield-shaped, the petiole is enlarged, the short stem is formed at the base of the plant, and the nutrients are gradually accumulated and enlarged into a fleshy bulbous ball or block. However, the axillary buds in the middle and lower nodes have the strongest activity and the first tillering. They are moist under suitable conditions, not drought-tolerant, more shade-tolerant, and have the characteristics of aquatic plants, and can be cultivated in paddy field or dry land. The root system has weak absorption capacity, so it requires sufficient water during the whole growth period. It has wide adaptability to soil, and it is suitable for rich and deep clay soil with strong water retention; Taro began to germinate at 15℃ in the hot and humid environment, and the growth period required 2℃, and the bulbs developed well at 27℃-3℃.

taro is native to high-temperature and humid areas, and in the long-term cultivation process, it has formed cultivation types such as taro, taro for both flood and drought, and taro for drought. However, both taro and dry taro need high-temperature and humid environmental conditions. The bulbs of taro begin to germinate at 13-15℃, and the optimum temperature for growth in seedling stage is 2-25℃, and the optimum temperature for growth in seedling stage is 2-3℃. The large temperature difference between day and night is beneficial to the formation of bulbs, and the most suitable bulb formation period is 28-3℃ during the day and 18-2℃ at night.

taro is suitable for growing in water, so it needs to be cultivated in paddy field, low-lying land or ditch. Although dry taro can grow in dry land, it still maintains the ecological type of swamp plants, so it should be planted in humid areas. Taro is a fertilizer-loving crop, and its bulb is formed in underground soil, so loam or clay loam with rich organic matter and deep soil layer should be selected. Hydroponics have requirements for water quality. First of all, the water should be clean and not contain impurities. Secondly, the water should be warm, and it should be raised by air-dried water with a temperature close to room temperature in winter.

Both water taro and dry taro like moist natural environment. The dry taro needs moist soil in its growing period, especially in the vigorous leaf growth period and bulb formation period, which requires a large amount of water, so it is necessary to increase the watering amount or irrigate shallow water in the furrow. At the same time, pay attention to spraying Diguozhuangdiling at the early stage of bulb formation and maturity, so as to thicken the nutrient transport conduit of Diguozhuang, improve the expansion vitality of Diguozhuang, make the fruit surface smooth, make the fruit shape robust, improve the quality and achieve high yield. A certain water layer is required in the growth period of taro, and the water layer is 3-5 cm in the seedling stage. It is better to have a water depth of 5-7 cm in the peak period of leaf growth, and water and irrigation should be controlled 6-7 days before harvest to prevent the bulbs from containing too much water and being difficult to store.