摘要
There is great potential for agriculture in saline-alkali soil area in Songnen Plain, Northeast China. But the sustainable crop production in this area has been restricted by a few of main factors, such as less precipitation, h igher evaporation and frequent drought, high salinity and alkalinity, high excha ngeable sodium content and poor infiltration of the soil, and insufficiency and low availability in nutrition. It is also considered that there are a few of fav orable conditions for agricultural development in this region, such as sufficien t light and heat resources, rich ground water resources, plenty of manure produc ed by livestock, and so on. At the same time, scientific management and measurem ents have been employed; rational irrigation and drainage system has been establ ished; reclamation, amendment and fertilization of soil, and suitable strategies of cropping practices have been made for the sustainable development of agricul ture. Great progress has been made during 1996-2000.
There is great potential for agriculture in saline-alkali soil area inSongnen Plain, Northeast China. But the sustainable crop production in this area has beenrestricted by a few of main factors, such as less precipitation, higher evaporation and frequentdrought, high salinity and alkalinity, high exchangeable sodium content and poor infiltration of thesoil, and insufficiency and low availability in nutrition. It is also considered that there are afew of favorable conditions for agricultural development in this region, such as sufficient lightand heat resources, rich ground water resources, plenty of manure produced by livestock, and so on.At the same time, scientific management and measurements have been employed; rational irrigation anddrainage system has been established; reclamation, amendment and fertilization of soil, andsuitable strategies of cropping practices have been made for the sustainable development ofagriculture. Great progress has been made during 1996 ― 2000.
基金
UndertheauspicesoftheNationalKeyProject(BA508B05).
关键词
土壤改良
盐碱土
持续性农业发展
松嫩平原
sustainable agriculture development
saline-alkali soil
songnen plain
