1) Terracing of the land on the slopes
坡耕地梯化
1.
Terracing of the land on the slopes is the basic measures to prevent soil and water loss of the slope cultivated land and the guar.
文章以西部生态脆弱带 为例 ,论述了坡耕地的主要问题 ;从坡耕地梯化是防治坡耕地水土流失的根本措施 ,和粮食安全保障等 4方面 ,论述了坡改梯是西部农业基础设施建设的重点 ;提出了战略上要先难后易 ,战术上要先易后难进行坡耕地梯化的建
2) terracing of the land on the slope
坡地梯化
3) terrace cropping
旱坡地梯化
1.
The concentration of various phosphorus forms and the amount of phosphorus loss in runoff from yellow soil of hilly areas by terrace cropping in Guizhou provinc e were studied.
结果表明 ,梯化与未梯化黄壤旱坡地地表径流中颗粒态磷和生物有效磷含量出现显著性的差异 ,旱坡地梯化后地表径流中颗粒态磷的含量减少 17。
4) slope cropland
坡耕地
1.
Soil moisture character of agro-forestry and contour ridge tillage technique of slope cropland in Three Gorges Reservoir Area;
三峡库区坡耕地粮经果复合垄作对土壤水分特征的影响
2.
A field experiment was conducted in hilly area of central Sichuan Basin to study the characteristics of leaching and soil P loss in the leachate from slope cropland of purple soil under natural rainfall during maize growth period.
通过对川中丘陵区冬小麦-夏玉米轮作条件下,玉米季不同施肥试验田渗漏水的观测与分析,研究了紫色土坡耕地在天然降雨时渗漏水的产流规律及土壤磷素的淋溶迁移特征。
3.
The results showed that the erosion in the front and middle parts of the slope cropland were the most fierce belt,which was less in the top of slope and soil deposit in the bottom.
运用137Cs示踪了陕北安塞试区坡耕地土壤侵蚀量,并以室内分析的方法研究了黄土高原北部坡耕地土壤侵蚀与土壤性状的关系。
5) slope farmland
坡耕地
1.
Test of runoff and sediment yield regularity on slope farmland;
坡耕地径流小区产流产沙规律
2.
Discussion of exploitation of the slope farmland;
关于坡耕地开发利用的探讨
3.
Comprehensive regulation on soil and water conservation of slope farmland is strategic measure for new countryside construction in hilly areas;
坡耕地水土综合整治是山丘区新农村建设的战略性措施
6) slope land
坡耕地
1.
Accelerating soil and water losses control in slope land of south China by developing Boehmeria nivea enterprise;
振兴苎麻产业 加快南方坡耕地水土流失治理步伐
2.
Soil-water Physical Properties of Slope Land under Different Harness Modes;
竹林等不同治理模式下坡耕地的土壤水分物理性质特征研究
3.
In order to effectively control soil and water loss of slope land smaller than 25° while not effect the grain production of local area, the function on soil and water conservation of mountain rice has been tested.
为有效地根治 2 5°以下缓坡耕地的水土流失又不影响当地的粮食生产 ,对旱稻的水土保持作用进行了试验研究。
补充资料：三菱油化倒梯台炉
分子式：
CAS号：
性质：由日本三菱油化株式会社和三菱重工业株式会社开发的一种倒梯台型烃类热裂解制乙烯管式裂解炉。多程分枝变径反应炉管单排垂直悬吊在辐射段中央，由排布在炉子顶部和中间梯台顶部、火焰向下的大型扁平长火焰油、气烧嘴双面辐射供热。炉膛墙面向内倾斜，加热均匀，炉管上下温并可控制在30℃以内，裂解炉内设有多组炉管，每组炉管共有五程。第一、二程为两根并联的椭圆型炉管，其比表面较同周长的圆形管大，可提高物料升温速度和受热均匀性。第三、四、五程为单根大直径等径圆管。炉管材质为耐高温合金钢。对流段设置在辐射段下部。高温裂解气采用特殊设计的螺旋管-双管套式M-TLX三菱一级急冷锅炉急冷并回收高温热量。适用石脑油、轻柴油作裂解原料。
CAS号：
性质：由日本三菱油化株式会社和三菱重工业株式会社开发的一种倒梯台型烃类热裂解制乙烯管式裂解炉。多程分枝变径反应炉管单排垂直悬吊在辐射段中央，由排布在炉子顶部和中间梯台顶部、火焰向下的大型扁平长火焰油、气烧嘴双面辐射供热。炉膛墙面向内倾斜，加热均匀，炉管上下温并可控制在30℃以内，裂解炉内设有多组炉管，每组炉管共有五程。第一、二程为两根并联的椭圆型炉管，其比表面较同周长的圆形管大，可提高物料升温速度和受热均匀性。第三、四、五程为单根大直径等径圆管。炉管材质为耐高温合金钢。对流段设置在辐射段下部。高温裂解气采用特殊设计的螺旋管-双管套式M-TLX三菱一级急冷锅炉急冷并回收高温热量。适用石脑油、轻柴油作裂解原料。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条