Geographical distribution
Ramie is China's unique crop that uses textile as its main purpose. It is a national treasure of China. The output of ramie in China accounts for more than 90% of the world's ramie production, and it is internationally known as “Chinese grassâ€. Ramie is suitable for planting in temperate and subtropical areas. The soil is deep, loose, with high organic matter content, water retention, fertilizer retention, and drainage, and the PH value is preferably 5.5-6.5.
China's major producing areas are distributed between 19 degrees and 39 degrees north latitude, from Hainan Province in the south, and to Shaanxi Province in the north. There is a history of planting ramie in the north, which is generally divided into the Yangtze River basin area (including Hunan, Sichuan, Hubei, Jiangxi, and Anhui Provinces). ), South China Ma District (including Guangxi, Guangdong, Fujian, Yunnan, Taiwan and other provinces and autonomous regions), the Yellow River Basin Ma District (including Shaanxi, Henan Province and the southern part of Shandong Province). Among them, the Yangtse River Basin is the main producing area in China, and its cultivated area and production account for more than 90% of the country's total cultivated area.
Ramie is generally harvested three times a year, with a growth cycle of approximately 50-90 days, depending on the weather conditions. Ramie is a short-day plant. The length of day and night not only affects the sooner or later of the flowering of the ramie, but also affects the ratio of male and female. It can promote flowering if it is 8-9 hours long, but it is mostly male when there are more female flowers with a daily length of 14 hours.
Ramie fiber is cellulose, light intensity and daily sunshine hours have a great impact on fiber yield. If there is insufficient sunshine, the total light effects are weakened, the stems are weak, the hemp skin is thin, the fiber cell walls are thin, the process maturity is delayed, and the yield is reduced.
However, the sunlight is too strong. The high temperature and drought will also inhibit the growth of the juglans. The lignification of the cells will reduce the Zhang quality and yield.
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