DEVELOP STUDY ON THE TECHNIQUE FOR INCREASING COTTON YIELD IN THE SALINEALKALI AND FLUVIA-AQUIC SOIL OF NORTH HUAI PLAIN OF ANHUI
A Study of developmental technique was made in the salinealkali land and fluvio-aquic soil (Shajiang black soil)of northern plain of Huai River in Anhui province to meet the needs for increasing cotton yield during 1983-1985. The following measures have been adopted:1.replacing cotton varieties by. new ones; 2.adopting regionalized and normalized culture techniques including the technique of polyethylene mulching and so forth; 3. improving ecological environments of cotton fields such as ameliorating integral irrigation and maintaining fertility of farmland. By using those techniques cotton yield and economic benifit have been increased remarkably. The questions for further study in this field are put forwards as well in this paper.