稻田生物灾害生态调控的综合效益研究

Studies on Integrative Benefits of Ecological Regulationof Biology Calamity

单季稻田生物灾害生态调控的综合效益研究结果表明:综防田的蜘蛛群落和土壤动物群落的生物多样性均高于化防田.两类稻田蜘蛛群落物种数和个体数的差异性均达显著水平,而两类稻田土壤动物群落类群数和个体数均达极显著水平以上.综防田的杂草群落生物多样性显著低于化防田.综防田蛛虱数量存在正相关,说明稻田蜘蛛具有重要的生态调控作用.综防田农药用量、农药费用和农药残留均低于化防田.综防田的土地生产率、产值利税率和农副产品商品率均高于化防田.以综防田为代表的稻田生物灾害生态调控具有良好的生态、经济和社会效益.

Integrative benefits of ecological regulation of biology calamity have been studied.The results showed:diversities of spider community and soil animal community in rice fields by the syntbetic regulation are always higher than that in rice fields by the chemical control.The differences of species and quantities of spider communities are significant between two rice fields,and the differences of species and quantities of soil animal community are highly significant or more.Species and quantities of the weed of the ecological regulation fields are significantly lower than that of the chemical control fields.The quantities of spiders and planthoppers in the ecological regulation fields have positive correlation,and this phenomena implies that spiders are important to regulate rationally rice fields.Insecticides are strictly controlled in the ecological regulation fields whose economic benefits are better.In terms of all kinds of analyses,the synthetic regulations of the biology calamities in rice fields have benign effects in the ecology,economy and society.