This paper has discussed the method of cement and quick lime soil piles combination for supporting the circular shaped foundation pit.
本文介绍用水泥和生石灰土桩联合围护圆形基坑的方法。
2
The fine-roots of Betula platyphylla forest have quick decomposition rate, so it plays an important role in soil nutrient return.
白桦林细根分解较快，在土壤养分归还方面能发挥重要作用。
3
Based on field fertilizer experiment of cotton under drip irrigation in the area, cotton nitrogen diagnosis and nitrogen fertilizer recommendation with soil inorganic nitrogen quick test was st.