gneiss soil 中文意思是什麼
gneiss soil
解釋
片麻巖土-
Study on the relationship between the soil nutrient elements and the apple fruit quality of the newly reclaimed apple orchard in taihang mountain gneiss area
太行山片麻巖區新墾蘋果園土壤營養與果實品質的關系研究 -
And we have got the following result : 1. the technique of storing water in soil in gneiss area of tai - hang mountain : the more water in soil before rain is, the less water capability of soil is, the time shorter of water flowing from soil is, the easier the water flows on the ground ; the soil capability of reserving water of different soil thickness is terrace > acacia land > pine land > grass land, so the soil is more thick, the soil capacity which contains water is more large ; the accumulated water that flows on the ground is remarkable related with the logarithms of rain time
太行山片麻巖區土壤蓄水規律：雨前土壤含水量越高，土壤可蓄水量越小，出流所需時間越短，容易形成地表徑流；不同土層厚度的土壤蓄水量為：梯田刺槐林地油松林地草地；累積地表徑流量與降雨時間的對數呈顯著正相關，擬合方程為w = a + blnt ，相關系數均大於0 . 92 ，即在降雨強度一定的前提下，降雨時間越長，累計地表徑流量越多。 -
The technique of water conservation in gneiss area of tai - hang mountain : on the facet of water conservation measure, four sorts of water conservation measures can all improve the soil water content. the result of straw mulch is best, using water holding agent in soil and plastic mulch are better, stone mulch is worse. four sorts of water conservation measures all improve the physical character of surface layer soil
太行山片麻巖區保水技術：在保水措施方面：四種保水措施均能提高土壤含水量，秸稈覆蓋的效果最好，土施保水劑和地膜覆蓋的效果其次，石塊覆蓋的效果較差；四種保水措施使表層土壤的物理性狀均有一定改善，使土壤容重降低、孔隙度和土壤飽和含水量增加。 -
A preliminary study on laws of soil and water losses in gneiss, which is the main type of rocks in taihang, was carried out in this paper on the bases of examination data, survey of flood and historic statistic data
根據試驗觀測數據和洪水災害考察結果，結合歷史統計資料，對河北太行山的主要類型巖石片麻巖低山區的水土流失特點進行了初步研究。 -
They decrease soil bulk density, increase soil porosity and soil saturated water content. the result of straw mulch is best, plastic mulch is better. the movement of soil water in gneiss area of tai - hang mountain has following regulation
其中以秸稈覆蓋的效果最好，其次為地膜覆蓋；太行山片麻巖區土壤水分運動有如下規律，土壤含水量隨土壤深度的增加而逐漸降低。
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