Selection of adaptive grass and frutex and their planting benefits in the arid-hot valleys of Yuanmou.

摘要

In view of the environmental character of the soil and content of the soil organic carbon, 278 species of grass and frutex, including graminae (18 genera and 75 species) and leguminosae (27 genera and 203 species) were introduced from 9 foreign countries and 7 provinces in China. Some were selected by applied production and plantation benefit investigations. Results showed that in the arid-hot valleys of Yuanmou, Yunnan, China, the selected species showed the characteristics of fast growth and high yield (38 227.00 kg/hm2), high nutrition value (CP% content of leguminous grass and frutex were 22.47%), as well as the strong resistance to high air temperature and arid climate (soil humidity was 3.4%). The selected species not only effectively meliorated soil and increased fertility, but also improved small environment weather.