采用田间微区15N示踪试验研究了肥料氮在冬小麦、夏玉米当季和后茬的去向.结果表明,在供试土壤的肥力水平和生产条件下, N 120kg/h......

Soil fertility management(SFM) has important implications for sustaining agricultural development and food self-sufficie......

随着观赏牡丹在园林景观中的广泛应用,后期养护出现生长植株弱小、叶片黄化、花型花色逐渐衰退现象,通过研究土壤问题的发生原因,......