被污染的废物经常被随意倒掉，周边土地因此而变得很贫瘠。The polluted waste is often dumped, making the surrounding land infertile.黑麦耐贫瘠的酸性土壤。Rye is tolerant of poor, acid soils.土壤这样贫瘠，植物能获得足够的养分吗？Can plants obtain adequate nourishment from such poor...
Assaying goes: not less Sichuan ( In fact, the veteran also dangerous ).俗话说: 少不入川 ( 其实老了也危险 ).Method: the description, physical chemistry identity, assaying and micro - identity was used test.方法: 采用性状 、 理化鉴别 、 含量测定、显微鉴别等...