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一、消除土壤障碍因素,培育基础地力土壤障碍因素,是由不同的地形、成土母质、地面坡度和自然灾害等自然因素以及不合理的人类生产活动所引起的,有的障碍因素在目前的经济技术条件下是不能改变或难以改变的,有的障碍因素通过采取工程、生物和农艺等综合配套措施改良是可以消除的。湖南省土壤障碍因素主要有以下类型:1.渍涝潜育型表现为地下水位高,通气透水性差,还原性有毒物质多,土壤水、肥、气、热、生不协调。必须通过开沟排水,降低地下水位,解决土壤通气状况,消除有毒物质。
First, the elimination of soil barriers, soil barriers to cultivate the foundation of the soil factors, is caused by different topography, soil parent material, the natural factors such as slope and natural disasters and unreasonable human production caused by some of the obstacles in the current Economic and technological conditions can not be changed or difficult to change, and some obstacles can be eliminated by adopting comprehensive complementary measures such as engineering, biology and agronomy. Soil barriers in Hunan Province are mainly the following types: 1. Waterlogging latent type is characterized by high groundwater levels, poor aeration and water permeability, reducing toxic substances, soil water, fertilizer, gas, heat, raw uncoordinated. Drainage must be done by ditching to reduce the water table, to solve soil aeration and to eliminate toxic substances.