应用田间试验的方法研究在长期免耕条件下覆盖对桑园土壤某些肥力性状的影响。
This paper took field experiment for studying the effect of covering straw on some properties of mulberry soil fertility with long-term no-tillage.
说明在某些工程地质条件下联合运用两种不同性状的桩型，可以获得更加合理的地基处理效果。
The results show that in some engineering geological conditions, the combined use of two type piles with different characters can achieve more reasonable treatment effect of the foundation.
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