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在水稻田建立水稻、萍、蟹立体结构,其中第1层次是水面上层生长的水稻;第2层次是浮在水面的水生植物细绿萍;第3层次是水面下生活的动物河蟹,三者利用同一有限的土地资源作为载体,多层次利用太阳光能并充分利用水资源,构成一个立体的农业开放系统。
In the paddy fields to establish rice, Ping, crabs three-dimensional structure, of which the first level is the growth of paddy rice on the surface; the second level is floating in the water aquatic plants green Lupin; the third level is the life of animals under water crab, the three Utilize the same limited land resources as carrier, make use of solar energy at multiple levels and make full use of water resources to form a three-dimensional agricultural open system.