The improvement of mineral soil by super deep plowing and its influence on the yield

超深耕改良矿质土及其对产量的影响

基本信息

批准号：
62480074
负责人：
ISOZAKI Hisashi
金额：
$ 4.29万
依托单位：
Gifu University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (B)
财政年份：
1987
资助国家：
日本
起止时间：
1987 至 1989
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-62480074/
关键词：
Deep plowing Penetration test Measurement of pF-soil moisture curve Measurement of the three phase distribution of soil Solid ratio Measurement of hydraulic conductivity of saturated soil Consistency test 塑性限界三相分布 pF値バックホ-リッパエン

项目摘要

In 1987 we set up three experimental fields in Toyohashit Aichi-ken: 1) 1.5 meter super deep ploving plot 2) 1.0 meter deep ploving plot 3) Customary plot and did dynamic penetration test, static penetration test as well as soil hardness test. As a result it is confirmed that in the super deep and deep plowing plot the measurement value vas extremely low compared with the customary plot. Also it became clear from the measurement of pF-soil moisture curve and the measurement of the three phase distribution of soil that macro pore and air ratio increased by deep plowing and solid ration decreased. This influence also appeared on the result of the penetration test i.e. the value increased extremely in the super deep plowing plot deep plowing glot. The result of the particle test showed that in contrast to the multi stratification of the customary plot, the particle component equalized in 1.0 meter and 1.5 meter deep plowing plot in all strata. Also the consistency test revealed that while … More in the customary plot the liquid limit and the plastic limit changed according to the depth and correspond with the stratification of the particle size distributions the change of the value were few in the 1.5 meter deep plowing plot.From the view point of chemical side of soil, though the many type of effective components were extremely unequalized just after the deep plowing treatment it was gradually equalized in accordance with the strata with the lapse of time. This was especially remarkable in the super deep plowing plot. In the super deep plowing plot, high density distribution pattern of many type of effective components appeared somewhere around 90 - 100 centimeter area. Also the illuviation from the result of declination of fine particle of soil could be found.The result of the yield test of cabbage done in 1988 - 1989 showed the yield became bigger in order of 1) super deep plowing plot - 1.5 meter 2) deep plowing plot - 1 meter 3) customary plot From the above it is clear that the deeper the plowing the more yield could be expected. Less

1987年，我们在丰桥爱知县设置了三个试验田：1）1.5米超深耕田2）1.0米深耕田3）常规田，进行了动态贯入试验、静态贯入试验以及土壤硬度试验。结果证实，在超深耕和深耕小区中，与常规小区相比，测量值极低，并且从pF-土壤湿度的测量中也可以看出。曲线和土壤三相分布的测量显示，深耕导致大孔隙和空气比增加，固体比降低，这种影响也出现在渗透试验的结果上，即在超深耕小区深耕时该值急剧增加。颗粒测试结果表明，与常规小区的多分层相比，1.0米和1.5米深耕小区的颗粒成分在各层中均等。虽然在常规图中，液限和塑限根据深度而变化，并且与粒径分布的分层相对应，但在 1.5 米深的耕作图中，该值的变化很小。土壤化学方面，虽然在深耕处理后，多种有效成分极不均衡，但随着时间的推移，这一点在超深耕地块中逐渐均衡。超深耕小区，在90-100厘米范围内出现了多种有效成分的高密度分布格局，并且可以发现土壤细颗粒偏角结果的浸蚀。甘蓝产量试验的结果。 1988年至1989年，产量按以下顺序变大：1）超深耕地块 - 1.5米2）深耕地块 - 1米3）常规地块从上面可以清楚地看出，耕作越深，预期产量就越高。