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- changes in soil bulk density 容重影响
- Then the changes of the soil bulk density and the resistan ce of plough draft under different treatments were measured and the tractor ener g y consumptions were calculated. 一般情况下，小拖的压实深度在耕层以内，可以通过耕翻土壤加以消除，而大型机器产生的压实将会在耕层以下形成积累。
- Zhang Y P,Zhu D F,Lin X Q.Roots distribution of rice in field and its relation to soil bulk density[J].Chinese J.Rice Sci.,2003,17(2):141-144. [7]张玉屏;朱德峰;林贤青.;田间条件下水稻根系分布及其与土壤容重的关系[J]
- EM microbial compost could decrease soil bulk density, increasing soil water content and improving the environment of crop growth. EM微生物堆肥能在一定程度降低土壤容重，增加土壤含水量，改善作物的生长环境。
- The content soil available N, P and K and soil bulk density of vineyard in Dough and kaleyard in Beichen were analyzed in order to enhance crop yield and quality. 摘要为了提高作物的产量和品质，做到配方施肥，采集了天津市东丽地区葡萄园和北辰区菜园土壤样本，测定了土壤速效氮、速效磷、速效钾的含量以及土壤容重。
- Liu W G, Chen Y, Shan L.Effects of soil bulk density on ABA concentration in xylem sap and stomatal conductance of maize (Zea mays L.) plant under different soil water conditions. 刘晚苟;陈燕;山仑.;不同土壤水分条件下土壤容重对玉米木质部汁液中ABA浓度和气孔导度的影响
- Results indicated that the application of green manuresmay decrease the soil bulk density affectively and adjust the soil pH,meanwhile it may also result the soil microbial biomass to increase greatly. 试验结果表明,绿肥翻压可以有效地降低土壤的容重和土壤的pH值,提高土壤的有机质,同时能促进土壤中微生物数量的大量增加。
- Key words: soil bulk density (SBD); 关键词：土壤容重；
- Application of Integrated Fertility Index Method in Evaluating Changes in Soil Fertility. 应用指数和法对潮土农田土壤肥力变化的评价研究。
- Title： Changes in Soil Seed Banks and Biodiversity along an Altitude Gradient in Taibai Mt. 关键词：太白山;土壤种子库;物种多样性;海拔
- The results indicated that tree ring chemistry of Masson pine could provide information concerning historical changes in soil and atmospheric heavy metals in the Delta. 马尾松年轮化学分析的结果能够提供珠三角地区重金属的历史变化信息。
- Coke - Determination of bulk density in a small container. 摘要:焦炭。用小型容器测定容积密度。
- Effects of soil bulk density on soil physical properties and wheat growth 土壤容重对土壤物理性状和小麦生长的影响
- Recent changes in the tax law are clearly set out in the booklet. 在那本小册子里清楚地描述了近来税务法的变更情况。
- Effect of Soil Bulk Density on Soil Nutrient in Runoff from Loess Slope 表层土壤容重对黄土坡面养分随径流迁移的影响
- Appreciable changes in temperature. 可察觉到的温度上的变化
- We have seen massive changes in recent years. 这几年我们经历了巨大的变化。
- Effect of Soil Bulk Density on the Growth, Yield and Quality of Ginger 土壤容重对生姜生长及产量和品质的影响
- Effect of soil bulk density on maize growth under different water regimes 不同土壤水分条件下容重对玉米生长的影响
- Amounts of moisture in soil vary greatly. 土壤中湿度变化很大。
