Results 81 to 90 of about 18,320 (162)
Shuitu Baochi Xuebao, 2019 以福建省西部宁化县紫色土区梯田+杨梅+百喜草（C1）、山边沟+鱼鳞坑+金银花（C2）、隔坡梯田+鱼鳞坑+油茶（C3）、鱼鳞坑+油茶（C4）、竹节沟+乔灌草（C5）5种水土保持措施和无水土保持措施（CK）的紫色土坡地为研究对象，对比分析不同水土保持措施下闽西紫色土速效养分含量及可蚀性特征差异，并揭示土壤速效养分与可蚀性特征间的相互关系。结果表明：5种水土保持措施下紫色土速效养分含量除硝态氮外均高于CK，其中，铵态氮（NH4+-N）、硝态氮（NO3--N）、速效磷（AP）、速效钾（AK）含量分别呈现C2 >
陈俊佳 +6 more
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Research advances in the interaction mechanism and ecological functions between orchard soil microorganisms and physicochemical properties [PDF]
The complex and dynamic interactions between soil microbial communities and soil physicochemical properties constitute a fundamental mechanisms maintaining the stability, functionality, and long-term sustainability of terrestrial ecosystems.
DONG Tie +4 more
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Shuitu Baochi Xuebao, 2020 为揭示砒砂岩区主要造林树种枯落物持水性能及林下土壤物理性质变化特征，以位于黄土高原北部准格尔旗砒砂岩区6种林分类型为研究对象，运用浸泡法和烘干法，对林下枯落物、土壤（0—50 cm）的持水性能及物理性质进行研究。结果表明：（1）砒砂岩区6种林分类型林下枯落物厚度范围为0.73~2.77 cm，总蓄积量范围为1.47~7.93 t/hm2。枯落物层厚度、总蓄积量大小依次为油松、侧柏、沙棘、柠条锦鸡儿、山杏和撂荒地。枯落物未分解层厚度及其蓄积量均明显大于半分解层。（2）林下枯落物最大持水率范围为149.48%
吴晓光 +6 more
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Research Progress on Protein Additives for Enhancing Gel Properties of Meat Products [PDF]
Gelation, an important quality attribute of meat products, significantly influences the appearance, flavor, and texture of meat products. Enhancing gelation in meat products holds immense importance in improving the production process and the quality ...
LI Zhijie, YAN Ruisi, WANG Xiujuan, HU Zhonghai, CAI Tianci, ZHEN Zongyuan
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Shuitu Baochi Xuebao, 2011 以中亚热带杉木纯林(Ⅰ)和常绿阔叶林(Ⅴ)为对照,对闽北地区竹杉混交林(Ⅱ)、毛竹纯林(Ⅲ)、竹阔混交林(Ⅳ)3种不同类型毛竹林的林冠层截留、枯落物持水性能、土壤渗透性能及蓄水能力进行了研究。结果表明,各林分林冠截留率排序为Ⅴ(31.33%)>Ⅱ(28.17%)>Ⅳ(23.48%)>Ⅲ(22.88%)>Ⅰ(22.29%);枯落物持水能力排序为Ⅰ(26.8 t/hm2)>Ⅴ(12.1 t/hm2)>Ⅱ(11.3 t/hm2)>Ⅳ(11.1 t/hm2)>Ⅲ(9.2 t/hm2);土壤总蓄水量大小顺序为Ⅴ ...
刘蔚漪 +5 more
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Research Progress on the Processing Adaptability of Soybean Raw Materials for Traditional Soybean Products [PDF]
The processing of traditional soybean products is the primary method for soybean utilization in China, and their quality is significantly influenced by variations in soybean varieties.
LIU Zhenjun,, CUI Xinru,, GUO Xinru, YANG Rui, FAN Bei, LIU Guiqiao, LI Chunmei, WANG Fengzhong
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Shuitu Baochi Xuebao, 2002 用张力计法测量了黄白土的持水特性及施用有机物料对黄保水和供水性能的影响。结果表明：（1）在张力计测定范围内，黄白土土壤水吸力与含水量之间表现出显著的线性相关。（2）施用有机物料，可以提高土壤的保水性能。其中施用牛粪的效果要优于麦秸。施用有机物料，还可以提高土壤速效水的上限，降低速效水的下限，提高速效水的含量，增强土壤水的有效性。
汪建飞 李粉茹 等
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庐山杉木林与黄山松林的土壤层水源涵养能力和土壤侵蚀敏感性探究
Shuitu Baochi Xuebao, 2022 森林的水土保持效益包含水源涵养能力和土壤的侵蚀敏感性,为探讨基于坡面尺度林分因子对水土流失的影响,进一步揭示森林植被的水土保持效益机制,采用环刀法、EPIC模型等分别计算黄山松林、杉木林的水源涵养能力和土壤侵蚀因子。结果表明:(1)黄山松林的土壤容重在垂直剖面无明显差异,变化范围为0.66~1.10 g/cm3;杉木林的容重(0.92~1.21 g/cm3)则呈现中下层(40-80 cm)大于中上层(0-40 cm)。黄山松林上层(0-20 cm)土壤的最大持水量极显著大于杉木林。土壤的毛管持水量 ...
温林生 +7 more
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Mining-affected water resources and ecological effects in ecologically fragile mining areas of western China [PDF]
The ecologically fragile mining area in the west is an important coal production base in China, and the current scale and intensity of coal mining has far exceeded its environmental carrying capacity, which is very likely to cause irreversible damage to ...
Liqiang YU +4 more
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Dianci bileiqi, 2015 复合绝缘子是绝缘材料在电力系统外绝缘应用之一,其绝缘老化性能与表面憎水性有密切关系,因此需要对其绝缘老化判断方法进行研究。本文提出了一种基于支持向量量机（SVM）的复合绝缘子硅橡胶材料绝缘老化性能的判断方法。支持向量机以结构风险最小化为原则,统计学习训练为基础,具有较强的泛化能力。该文以最大水珠形状因子、面积比等特征参数为输入,硅橡胶材料的绝缘老化性能为输出,建立特征参数与绝缘老化性能间的关系。实验结果表明:该方法能判断出复合绝缘子硅橡胶材料绝缘性能良好、正常、差3种状态,尤其以最大水珠面积比为输入时 ...
何贵, 廖平军
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