cultivated black soil

常見例句

Since fresh black soil was cultivated, soil fertility has showed a decreasing trend.
黑土開墾種植后，土壤肥力呈下降趨勢。
To distinguish effects of soil factors and space factors, the experiment was conducted in black soil area, and soybean plants were cultivated with a model of different rages of sash.
為了從理論上區(qū)分土壤因子和空間因子的作用，試驗采用框栽的方法控制土壤面積，研究了增大空間因子對生長在不同土壤面積上的大豆植株的影響。
By the experiment of laboratory simulation, effect of organic C and inorganic N addition on water stability of aggregates with different particle fraction from cultivated black soil were studied.
用室內(nèi)模擬試驗研究了有機C、無機N添加對耕地黑土不同粒級團聚體水穩(wěn)性的影響。