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烤烟生长对土壤酸碱度的适应性较强,pH 低者为4.0,高者可达8.5,但并不是在这个范围内都能生产出优质烟叶。随着科学研究的发展和人们对生产实践的认识,逐渐提出了对烟叶质量有利的土壤 pH 范围,但迄今见解不尽相同,例如美国要求种烟土壤的 pH 为5.9,加拿大为5.8,津巴布韦为5.5～6.5;日本村冈六十年代提出最适宜 pH 范围为5.6～6.0,而高桥通过砂培试验指出7.0时烟株生长最好,宇野最近水培法试验表明 pH 6.7～7.0为最适宜,但考虑到控制
Flue-cured tobacco growth is more adaptable to soil pH, with the lowest pH being 4.0 and the highest being up to 8.5, but it is not possible to produce good quality tobacco within this range. With the development of scientific research and people’s understanding of production practice, the soil pH range gradually raised for the quality of tobacco leaves, but so far the opinions vary, for example, the United States requires that the soil of tobacco planting pH is 5.9, Canada is 5.8, Zimbabwe is 5.5 ~ 6.5. Japan’s Muraoka proposed the most suitable pH range from 5.6 to 6.0 in the 1960s, while Takahashi pointed out that the tobacco plants grew best at 7.0 through the sand culture test. The recent hydroponics tests in Ueno indicated that pH 6.7-7.0 was the most suitable But take control