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    ON THE SOIL STRUCTURE UNDER INTENSIVE FARMING SYSTEM Ⅲ MICROMORPHOLOGYCAL CHARACTERISTICS OF SOIL STRUCTURE UNDER DIFFERENT CONDITIONS OF INCUBATION
    关于集约农作制下的土壤结构问題——Ⅲ.不同培育条件下土壤结构的微形态特征
    The Influence of Incubation Conditions on Soil Nitrogen Mineralization
    培养条件对土壤氮素矿化的影响
    The results showed that the contents of non-exchangeable NH4+-N increased with increasing the incubation time.
    结果表明:土壤非交换性NH4+-N随Bremner法淹水培养时间延长,含量增加。
    The amount increased for non-exchangeable NH4+-N existed significant difference(P=0.022 9) among the different soil types after the 20d of incubation,however, it was not significantly different when incubation at 40 d(P=0.1379) and 60 d(P=0.115 9).
    不同土壤类型在培养20 d时非交换性NH4+-N的增加量存在显著差异(p=0.022 9),而培养40 d和60 d时差异不显著(p分别为0.137 9和0.115 9)。
    The contents of non-exchangeable NH4+-N increased significantly when added(NH4)2SO4 compared without addition at 20 d,40 d and 60d of incubation and P was 0.0037,0.0033 and 0.0027,respectively. It was the result that the NH4+-N from(NH4)2SO4 was fixed within the soil.
    在培养20 d、40 d和60 d时,加(NH4)2SO4土样非交换性NH4+-N的增加量显著大于不加(NH4)2SO4土样(p分别为0.003 7,0.003 3和0.002 7),这是土壤对(NH4)2SO4中NH4+-N固定的必然结果;
    The results indicated that during the incubation periode the application of phosphorus fertilizer increased the contents of Ca2-P and Ca8-P significantly,but had little effect on those of A1-P,Fe-P and O-P.
    结果表明:施入盐土中的无机磷在短期内主要增加土壤中的Ca2-P和Ca8-P的含量,而对A1-P、Fe-P和O-P的影响较小;
    The fertilized phosphorus was at first transformed into Ca2-P,and then turned to Ca8-P,Ca10-P,Al-P,Fe-P and O-P during the incubation course.
    施入盐土的无机磷首先转化成Ca2-P,然后再向Ca8-P、Ca10-P、Al-P、Fe-P和O-P转化;
    The effect of organic manures,including chicken dung,cattle dung and pig dung,on the content of available Cu,Zn,Fe and Mn in soil was studied with a incubation method in lab.
    采用室内培养和DTPA浸提法研究了鸡粪、牛粪和猪粪等有机肥料对土壤有效Cu、Zn、Fe、Mn含量的影响。
    Results indicated that throughout the entire incubation period,only Treatment Ewas significantly higher than Treatment S(p<0.05)in both NH+4-N and NO-3-N,by about 0.54~5.71 and 0.04~2.01 times separately.
    结果表明:在整个培养时期中,仅接种蚯蚓处理(E)的土壤铵态氮和硝态氮含量均较对照处理(S)有显著提高(p<0.05),分别较同期对照处理(S)高出0.54~5.71倍和0.04~2.01倍;
    The content of total nitrogen in Treatment E was significantly higher(p<0.05)than in Treatment S in all the incubation phases except for in the first 2 days of incubation and at the end of the experiment,it was about 6.55% higher.
    此外,仅接种蚯蚓处理(E)的全氮含量除了培养2d外,其他培养时期均与对照处理(S)有显著差异(p<0.05),到培养55d时,其全氮含量较同期对照处理(S)增高了6.55%。
    The mineralization,immobilization and priming effect of soil N in raw loessial soil,garden loessial soil and Swedish cultivated meadow soil were studied by using the incubation method with adding glucose-14C,straw14C,NH4-15N and NO3-15N.
    本文利用14C和15N对中国生黄绵土(坡地黄绵土)、菜园黄绵土和瑞典耕作草甸土的土壤氮矿化、固定与激发效应进行了研究。
    Aerobic incubation was conducted to study the characteristics of NO3——N and NH4+-N mineralization from different organic fertilizers.
    通过好氧培养试验,对不同有机肥中NO3--N与NH4+-N的矿化特性进行了研究。
    With the extension of incubation,NH4+-N content decreased rapidly applying organic fertilizer to soil. At the fifth day,it was lower than the control and nearly to or slightly higher than the control after 15 d.
    随培养期延长,施肥土壤NH4+-N含量迅速下降,培养5 d时低于对照土壤、15 d后接近或略高于对照土壤。
    The Close-Top Incubation method was applied to study the variation of NH+4-N,NO-3-N and net N mineralization at different altitudes on the western slopes of the Helan mountains.
    采用封顶埋管法对贺兰山西坡不同海拔梯度上土壤铵态氮(NH4+N)和硝态氮(NO3-N)以及N净矿化速率进行了研究。
    The mineralization and priming effect of soil organic matter in Raw Loessial Soil(RLS) and Garden Loessial Soil(GLS) were studied using incubation method by adding glucose-14C,straw-14C,NH415N,NO3-15N.
    应用14C标记的葡萄糖和麦秸,15N标记的(NH4)2SO4和Ca(NO3)2对生黄绵土、菜园黄绵土土壤有机质的矿化与激发效应进行了研究。
    The average mineralization rate of organic S in different texture aquods is 1.10-1.24 mg·kg-1 week-1. After 12 weeks incubation, the mineralized organic S in loamy soil may account for 4.6 % of total soil organic S, 7.6 % and 4.4 % in sandy and clay soil separately.
    培养12周,壤土、砂壤土、粒土的累积矿化硫分别占其全硫的4.6%、7.6%、4.4%,不同质地潮土有机硫的累积矿化量为13.1~14.1mg·kg-1,差异不大。
    The results showed that the optimum preparation conditions for A41 protoplast was that the cell incubation time 20h, temperature 37℃n, respectively;
    实验结果表明,固氮菌 A41最佳制备条件为菌龄20h、酶解温度37℃、酶浓度3mg/mL、酶解时间45min;
    Soils Nitrogen Mineralization Processes under Continuously Waterlogged Incubation Conditions
    连续淹水培养条件下土壤氮素的矿化过程
    Effect of urea concentration,incubation time and temperature on urea hydrolysis in 3 different soils
    尿素浓度、培养时间和温度对3种土壤尿素水解过程的影响
    Study on Decomposition and Transformation of Soil Organic Matter During Incubation Experiment
    特定培养条件下土壤有机质分解转化规律的研究
 

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