Study on the correlation between soil extract and soil physical and chemical properties of CordycepsSinensis
ZHANG Zong-hao etal
(Qinghai Academy of Animal Science and Veterinary Medicine, Qinghai University,810016)
Abstract :In order to study the relationship between soil chemical properties before and after the excavating Cordyceps and excavation behavior, the relationship between digging behavior and soil chemical composition as well as pasture growth were analyzed by comparing content change of PH, calcium, phosphorus, iron, copper in different soil depth before and after excavation. The results showed that soil presents weak acid after Cordyceps excavation under depth of soil between 0 ~ 5 cm and 5 ~ 10 cm respectively, organic matter content is rich, soil is fertile, soil lacks calcium, is not conducive to the decomposition of organic matter and nitrogen fixation. The content of total phosphorus and available phosphorus is medium in soil, can meet the needs of forage growth. The average iron content of soil depth of 0 ~ 5 cm before excavation is higher than after excavation, it is possible that due to the temperature of soil and air is low, microbial decomposition weakened, pasture growth gradually stop, increase the accumulation of iron in soil before excavation.
Kay Words:Cordycepssinensis;Before and after excavation; soil; Correlation