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    Characteristic of Soil Nutrient in Dam System and Its Relation with Erosion Environment in the Loess Hilly Region Ⅱ. Particles Distribution and Its Nutrient Condition in Dam System Soil
    黄土丘陵区坝地系统土壤养分特征及其与侵蚀环境的关系 Ⅱ.坝系土壤粒径分布及各粒径的养分状况
    An analysis of resources utilization condition of intercropping patterns in the semiarid areas liable to droughts in South Ningxia
    宁南半干旱偏旱区间作模式及其资源利用状况分析
    Analysis of Cultivated Land Soil Avoilable Potassium Content Condition in Chizhon Prefecture
    池州地区耕地土壤速效钾含量状况分析
    Dynamic Research on Soil Water and Fertility Condition After Mechanized Returning Corn Stalks Into the Soil
    机械化玉米秸秆还田对土壤水肥状况的动态研究
    Analysis of Soil Erosion Under Different Precipitation Condition
    不同降雨带上的土壤侵蚀状况分析
    Changes of Soil Nutrient Condition in Jinhua and Its Countermeasures
    金华市土壤养分状况变化与对策
    Application of Groundwater Condition in Soil Improvement in Seasonal Frozen Earth Region
    季节性冻土区地下水状况在土壤改良中的应用
    A Study on Soil Moisture Condition of Sand Land Under Different Vegetation in North of Zhangwu County
    彰武北部沙地不同植被覆盖下土壤水分状况研究
    So it can reflect the ability and condition of soil water use.
    这就更客观、更准确的反映了一种作物在特定土壤上吸水的能力和状况
    2. The condition of energy flow: The input of energy increases year after year. The ratio of organic energy to inorganic energy is reasonable. The efficiency of energy in 1990, 1995 and 2003 is 1.96,2.26 and 2.16 respectively.
    2、能流状况:流域能量投入呈逐年增加趋势,有机、无机能比例基本合理,1990、1995、2003年农田能效率分别为1.96、2.26、2.16。
    The results are:(1)The LUCC condition has changed obviously: ①The area of woodland and residential - industrial quarter increased 2791.71 and 1290.55 ha respectively, while the area of grassland reduced 4014.18 ha;
    (1) 土地利用状况发生了明显变化:①林地面积增加2791.71ha,城乡工矿居民用地面积增加1290.55ha,草地面积减少4014.18ha:②土地利用总体变化速度较快,综合土地利用动态度为0.77%;
    Since the Controlled Alternate Partial Rootzone Irrigation (APRI) was proposed, many specialists who are devoted to water-saving irrigation have done many researches about this new irrigation technology such as the growth and assimilation ability of crop root, the growth of maize, the physiological condition, yield and and water use efficiency (WUE).
    控制性根系分区交替灌溉自提出以来,许多致力于节水灌溉的专家对这一生物节水灌溉新技术进行广泛而深入的研究,对作物根系生长发育及吸收功能、作物地上部分生长发育和水分生理状况以及作物产量与提高水分利用效率的等方面影响的研究已取得较大的进展。 但对控制性根系分区交替灌溉条件下土壤微生物数量以及分布的影响尚未见报道。
    By analyzing soil samples collected from an area of 180,000ha in Jinhua city in 1988/1989 and 1998/1999, and comparing with the second soil survey, we have found out that the soil nutri-ent condition tends to decline.
    通过1988-1989年和1998-1999年两次对金华市范围的18万ha耕地进行采土取样化验分析,结果与第二次土壤普查相比,土壤养分状况呈下降趋势。
    The study is mainly about the irrigating of Song Nen plain region and its water-salt sport environment condition and artificial factor etc.
    主要研究了松嫩平原地区的灌溉方式、土壤水盐运动状况、环境条件以及人为因素等,对土壤次生盐渍化的形成,提出预防与防治具有重要的意义。
    Q_(10) values of all communities were between 2.16~4.92, Picea crassifolia forest at altitude 2750 meters had higher Q_(10) value than other communities, which implied that different vegetation condition could affect the sensitivity of soil respiration to temperature.
    不同植被类型的Q10 值介于2 16~4 92之间,青海云杉林(海拔2 75 0m)群落的Q10 值高于其它植被类型,说明不同的植被覆盖状况会影响到土壤呼吸对温度变化的敏感程度
    Check analysis on 747 samples from seven counties(city) of tieling city,the result indicated that soil organic matter and nitrogen content were 1.58% and 0.089%,it located medium and missing condition,and missing area was also increase.
    对辽宁省铁岭市7个县(市)区55万hm2耕地的747个土样化验分析,结果表明,土壤有机质与全N平均含量分别为1.58%和0.089%,处于中等和较缺状况,较缺面积均有所增加。
    The contents of rapidly available phosphorus was 13.8 mg/kg in zverage,it increase obviously and achieve medium range and less lack,at the same time there was some area achieve luxuriant condition.
    速效P含量平均为13.8mg/kg,明显增加,达到中等和略缺状况,并且有一定面积达到较丰富状况
    Organic matter,total nitrogen,total phosphorus and total potassium content was higher than barren sand,increasing by 1.78,1.97,1.64,1.14 times,it showed Salix psammophila checkerboard improved fertility condition of soil.
    设置沙柳沙障后沙丘土壤有机质含量是对照地的1.78倍,全氮含量是对照地的1.97倍,全磷含量是对照地的1.64倍,全钾含量是对照地的1.14倍,说明设置沙柳沙障能够改善沙丘土壤的养分状况
    Through analyzing the maize growth and soil water condition with different cultivation way,the results show that there are differences among different cultivation way in root system biomass and root system volume,root condition of plowing with cover is better than that of others.
    通过对不同耕作方式玉米地下部生长发育及土壤水分状况进行分析,结果表明,不同耕作方式下,玉米的根系生物量、根系体积在不同生育期存在差异; 不同耕作方式间玉米根系性状存在差异,翻耕覆膜根系生长状况好于其它耕作方式。
 

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