The Study On Cultivation Techniques Of Ramie In Dry Land Of Hilly In The North Of Hunan Province

1. An agronomic traits analyzation to 11 ramie germplasms and one contrast resource which grow in the hilly region of north Hunan, during 2006～2008, has been explained in this article. The result shows that there are four pieces of ramie perform obviously higher yield than CK, after a field plot experiment work on 7 generations of ramie in 3 years. The yield of Zhongzhu I was 519.2 kg/mu, PolyploidⅠ451.37 kg/mu,Xiangzhu X5 354.2 kg/mu, and Xiangzhu X3 was 350.3 kg/mu. Finally Zhongzhu I and Polyploid I were considered as the High-yield germplasms which be suitable for planting in hilly region.2. Three treatments (Fertilizing, fertilizing/drought-resistant agents, fertilizing/ drought-resistant agents/covered with straws) were done in ramies, on hilly land areas in the north of Hunan. The result shows that:To comparing with the treatment of none-fertilizing, the treatment of fertilize/drought-resistant agents/covered with straws have the most obviously effect on yields which increasing by 77.85% and the fibre fineness decline 2.25%; fertilize/drought-resistant agents has increased yields by 61.52% and the fibre fineness decline 2.05%, Fertilize increased by 51.02% and the fibre fineness decline 3.08%.3. In the condition of droughty hilly land area of North part of Hunan, the experiment process of three treatments of high extent fertilizer,low extent fertilizer and CK for Xiangzhu3, on which, doing some sequel research on different levels of fertilize。It shows that, with different level of fertilize on the same kind of ramie, obviously we can get differnet Agronomic characters and productivity, specially in productivity。The production of the high fertility treatment was 106.54 kg/mu, the fibre fineness was 1928.5 m/g; The production of the low fat processing was 95.52 kg/mu, the fibre fineness was 1914.3m/g. the production of the CK was only 91.20 kg/mu, the fibre fineness was 1953.9 m/g. Compared with CK, high fertility treatment 16.82%, low yield increase fertilizer processing 4.74%.4. In the condition of hilly land area of North part of Hunan, every season get 3 harvest period(Black rod 2/3, on the base of Black rod 2/3, harvest 7 days earilier and 7days later), doing some different sequel research on productivity and Agronomic characters on ramie。It shows that in black rod 2/3 harvest the per kg, the fiber was 163.72 fineness for 2005.7 m/g; the production of the delayed 7 days was 156.96 kg for harvest, the fiber fineness was 1908.7 m/g; the 7 (seven) days in advance the harvest was per 143.55 kg, the fibre fineness wsa 2041.2 m/g. With black rod 2/3 harvest comparison, the production of the 7 days in advance was cut 14.5% harvest. The 7 days harvest are also cut off 4.3 percent.