海量图书期刊资源，随时随地畅享阅读乐趣
Puddling depth and intensity effects in rice–wheat system on a sandy loam soil: I. Development of subsurface compactionS.S Kukal; G.C Aggarwal · 2003
Puddling depth and intensity effects in rice–wheat system on a sandy loam soil: II. Water use and crop performanceS.S Kukal; G.C Aggarwal · 2003