Sustainable utilization of saline-alkali land resources through scientific and technological innovation in China.

Saline-alkali land is not only an unique important ecological type,but also a valuable land resource.Salinealkali land distributes largely in China.It is of great significance for ecological environment construction and expanding national reserved arable land by rational and sustainable utilization of these saline-alkali lands.This study reviewed the cause of formation and main influence factors for saline-alkali lands,their utilization potential,and practice of sustainable utilization at home and abroad.It was considered that at present,understanding about salinealkali land resources was generally insufficient;attention was mainly put on management but not protection;an unified planning and incentive mechanism is lacking.The authors suggestted to persist in trintty of ecology protection,agricultural industry and social development to sustainably utilize saline alkali lands as valuable resources,to plan as a whole of ecological construction,national food security and industry development,and to cultivate " 1,2,3" industries convergence solonchak agriculture industry chain.At the same time,the authors also suggestted to give full play to the government and market so as to establish a diversified investment mechanism.