据南亚一些国家介绍,在农村或市郊,采用养禽、养猪(或养牛),养鱼和种稻一体化,即综合养殖业,对于发展养殖业、废物综合利用、保护环境、开辟资源能够产生有益的效果,获得更大的经济效益。就稻田养鱼一事,可以获得20—30％的额外收入,而且,稻田养鱼,鱼稻并发,鱼的排泄物可供稻田增加肥力,而且鱼还能捕吃一些危及稻田的害虫,鱼和稻苗生长均好。一些研究者进一步利用自然条件,如地势自然倾斜的有限土地,建立鸡舍(或养鸭)、猪舍、沼气发酵池、养鱼池、稻田养鱼等,发展综合性生产系统。在自然倾度的高处地方,建筑简易的、地板为多网式禽舍,此处可以养鸭、养鸡。当然,禽舍结构一定要考虑采光充足、温度适宜。而网底要距地面高出两米左右,在网底下面的空间可以养猪或养牛。因为 According to some countries in South Asia, the integration of poultry, pig raising (or raising cattle), fish farming and planting of rice, that is, integrated aquaculture, in rural areas or in the suburbs, is aimed at developing aquaculture and comprehensive utilization of waste, protecting the environment and opening up resources Can produce beneficial results, greater economic benefits. In the case of fish farming in the paddy field, 20-30% of additional income can be obtained. Moreover, fish in the paddy field and fish and rice are concomitantly excreted by the fish for fertility enhancement. In addition, the fish can catch pests and fish that endanger paddy fields Rice seedlings grow well. Some researchers further exploit natural conditions, such as limited land with a naturally inclined topography, to establish a comprehensive production system by establishing a shed (or ducks), a pig house, a biogas fermentor, a fish pond, and a paddy field. In the natural inclination of the place, simple construction, the floor for the multi-network poultry houses, where you can duck, chicken. Of course, poultry house structure must consider adequate lighting, the temperature is suitable. The bottom of the net to be about two meters above the ground in the space below the bottom of the net can raise pigs or cattle. because