Some Improvement in Physical Properties of Paddy Soil Mixed with Soil Conditioner and Erosion Control Effects

重粘性土具有如此大的粘性，农田往往难以耕种，这也容易导致通航性下降。将重粘性土或普通水稻土与土壤调理剂混合，使水田作为普通田使用，可以改善其物理性质。本文的另一个目的是利用土壤调节剂来解决土壤侵蚀控制问题。土壤样品的粘土含量在25% ~ 65%之间。并对某商店销售的三种土壤调理剂进行了测试：HAIDORARU；陆地生物；SOILTER。在任何情况下，与土壤调节剂混合的土壤往往会形成团聚体。不同的粘土组分具有不同的团聚体形成效果。土体团聚体结构的发育有助于土体物理性质的改善。不同土壤调理剂对土壤的影响不尽相同。经处理后的渗透率是最显著的改善之一。降雨侵蚀试验表明，由于土壤团聚体的形成和渗透性的改善，土壤溅落率和土壤流失量都有所减少，这实际上是由于这种土壤与土壤改良剂的混合。在某些情况下，这种土壤的飞溅率往往会增加。这意味着团聚体的大小可能与土壤团聚体形成时最可能分散的大小一致。土壤调理剂的添加总会在一定程度上导致土壤污染。仅通过添加土壤改良剂不能达到控制农田侵蚀的目的。同时对农田土壤进行改良是必要的。

Heavy clayey soil has such a large amount of cohesion that the farmland is often hard to cultivate, and this is also apt to cause a drop in the trafficability. It is possible to improve the physical properties of heavy clayey soil or ordinary paddy soil by mixing it with a soil conditioner to use the paddy field as an ordinary field. The other purpose of this paper to deal with erosion control problems by means of soil conditioners.The clay fraction of samples of the soil ranges from 25 to 65%. And three types of soil conditioner on sale at a store are tested as follows : HAIDORARU ; LAND LIFE ; SOILTER. In any case, soils that are mixed with a soil conditioner tend to form aggregate. Different clay fractions have different aggregate formation effects. Soil aggregated structure development is useful in improving the physical properties. The effect of soil conditioners all samples is not the same. The permeability after treatment is found to be one of the most substantial improvements.Rainfall erosion experiments have shown that there is a decrease in the splash rate and the soil loss due to soil aggregate formation and permeability improvement, which fact results from the mixing of such soil with a soil conditioner. In some cases, an increase in the splash rate of such soil tends to occur. This means that the aggregates size could be in agreement with that of what are most likely to disperse as a result of soil aggregate formation. Addition of soil conditioners always leads to some extent. No erosion control of farmland can be achieved only by addition of the soil conditioner. It is necessary to improve farmland soil at the same time.