Organic matter of
sand soil was easy to decompose, and difficult to accumulate. Humic substance was main in organic matter,
and humin was main in humic substance, and proportion of HA to FAD was between (0.16) and 0.57. The content of full nitrogen and organic matter was correlative considerably. The content of NO_3~--N in varied soil layer was
increased by applying nitrogen
fertilizer. The peak of NO_3~--N in different soil layer appeared in May, June, July and August. The content of organic matter was related with quantity of applied organic matter, and increased with increasing of applied organic matter. The content of organic, full nitrogen, NH_4~+-N, NO_3~--N and valid-N increased notably after applied organic matter and nitrogen fertilizer, and it effected the content of NO_3~--N in different stage of ephedra, and the peak of NO_3~--N moved up. The quantity of fertilization in April, May, June and July were: 153.8～153.9 kg/hm~2,15.2～15.5 kg/hm~2,105.5～(105.6) kg/hm~2,112.8～113.0 kg/hm~2.