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

掺入土壤调理剂对水稻土物理性质的一定改善及侵蚀防治效果

基本信息

批准号：
02660236
负责人：
TAKUMA Katsutoshi
金额：
$ 1.34万
依托单位：
Tottori University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1990
资助国家：
日本
起止时间：
1990 至 1992
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-02660236/
关键词：
Soil conditioner Soil physical property Soil aggregate Improvement of paddy soil Permeability Erosion control 土壌改良土壌固粒土壌団径

项目摘要

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.

重粘性土具有很大的粘聚力，农田往往难以耕作，这也容易导致通过性下降。通过将重粘土或普通水稻土与土壤改良剂混合以将水稻田用作普通田，可以改善重粘土或普通水稻土的物理性质。本文的另一个目的是通过土壤改良剂来处理侵蚀控制问题。土壤样品的粘粒含量范围为25 - 65%。并测试了在商店销售的三种类型的土壤调理剂，如下：海兔灵;陆地生命;土壤。在任何情况下，与土壤调节剂混合的土壤往往会形成聚集体。不同的粘粒组分具有不同的团聚体形成效果。土壤团聚体结构的发育有利于改善土壤的物理性质。土壤改良剂对所有样品的改良效果不尽相同.经处理后的渗透性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，这种土壤与土壤改良剂混合，飞溅率和土壤流失减少。在某些情况下，这种污垢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有可能分散的团聚体大小一致。添加土壤调理剂总是在一定程度上导致。仅通过添加土壤改良剂不能实现对农田侵蚀的控制。必须同时改良农田土壤。