Results 91 to 100 of about 85,362 (203)
不同水分调控对晋西黄土区苹果×大豆间作系统细根分布与耗水特性的影响
Shuitu Baochi Xuebao, 2019 为探求适于晋西黄土区果农间作系统的水分调控措施，选取该地区典型的苹果×大豆间作系统为研究对象，结合覆盖与调亏灌溉2种节水措施，分析了不同水分调控措施对苹果和大豆根系空间分布、耗水量与水分利用等指标的影响。试验设置灌溉上限3个水平：田间持水量的55%（W1，低水），70%（W2，中水）和85%（W3，高水），2种覆盖材料：秸秆覆盖（M1）和地膜覆盖（M2）。结果表明：水分调控措施增加了苹果和大豆总根长密度，且扩大了苹果在水平和垂直方向上的根长分布。苹果根长密度与距树行距离呈负相关，而大豆则呈正相关 ...
周宣 +5 more
doaj
Contribution of Different Processes in Wetland Soil N_2O Production in Different Restoration Phases of the Yellow River Estuary, China [PDF]
, 2014 采用时空替代法,选择黄河口生态恢复前后未恢复区(R_0)、2007年恢复区(R_(2007))和2002年恢复区(R_(2002))的芦苇湿地为研究对象,分析了生态恢复工程对湿地土壤N_2O产生不同过程与贡献的影响. 结果表明,尽管不同恢复阶段湿地土壤N_2O总产生量差异明显,但总体均表现为N_2O释放. 恢复区湿地土壤的N_2O产生量大于未恢复区.
孙万龙 +4 more
core
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The engineering application of traditional nano‐bainite steel, also known as low‐temperature bainite steel, has been restricted due to its relatively low toughness and the prolonged isothermal transformation time during manufacturing processes.
Jin‐Zhou Zhang +7 more
wiley +1 more source
Shuitu Baochi Xuebao目的明确不同水文年和时间尺度气象因子对土壤水分的影响，为气候变化背景下水土资源综合管理提供科学依据。方法以宁夏南部半干旱黄土丘陵区山杏人工林为研究对象，于2018—2023年生长季，利用智墒传感器连续监测土层深度为100 cm的水分特征，分析土壤水分对降水量、气温、太阳辐射、相对湿度等气象因子的响应特征。结果丰水年、平水年、枯水年生长季平均降水量分别为597.7、428.5、298.1 mm，生长季0~100 cm土层土壤水分体积分数分别为19.69%、16.67%、11.88 ...
韩新生, 许浩, 刘广全, 曹扬
doaj
Shuitu Baochi Xuebao, 2018 2017年和2018年在北疆滴灌春小麦栽培中，额定施氮量为纯氮300 kg/hm2，设置3个调亏灌水量（水分不调亏E1：100% ET0；水分中度调亏E2：80% ET0；水分重度调亏E3：60% ET0）和2个小麦品种（水分敏感型X1：新春22；水分不敏感型X2：新春44），灌溉频率为7天1次。研究不同处理对滴灌春小麦土壤水分、硝态氮分布及产量的影响。结果表明：（1）水分重度调亏（E3）可以缓解0—40 cm土壤水分和土壤硝态氮向深层流失，减少作物耗水量，提高水分利用效率。（2 ...
万文亮 +5 more
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Composite materials hold significant potential for abrasive sealing, yet composite materials used for abrasive sealing fall short in service durability under extreme environments. Here, a controllable strategy for adjusting pore structure is proposed, aiming to design a YSZ(ESP)/BN@ZrO2‐polyester coating with hybrid micron/nanometer ...
Shuang Yu +8 more
wiley +1 more source
Shuitu Baochi Xuebao目的分析天山北坡土壤水分的时空变化特征及其影响因素，探讨耕地扩张对土壤水分的影响。方法基于2000—2020年的1 km日尺度土壤水分数据、土地利用数据、气象数据等数据，采用Theil-Sen Median趋势分析、Mann-Kendall显著性检验和Pearson相关系数分析，研究0~50 cm土层的土壤水分变化，并通过地理探测器模型探讨影响土壤水分的主要因素及其空间分异特征。结果2000—2020年，天山北坡0~50 cm土层土壤水分总体呈减少趋势，尤其在0~10 cm土层变化最显著 ...
李泓儒, 李超凡
doaj
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT Recovering palladium (Pd) from low‐concentration metallurgical wastewater still poses significant challenges. In this study, triaminoguanidine hydrochloride was used as the key functional site, and three guanidine‐functionalized covalent organic frameworks (GCOFs) were successfully constructed by adjusting the substituents (–H, –OH, and –OCH3)
Jiaxing Xiong +9 more
wiley +1 more source
An experimental study on the characteristics of soil water movement in unsaturated sand during and after a rain [PDF]
, 1983 Thesis--University of Tsukuba, D.Sc.(B), no. 120, 1983.
Kaihotsu Ichiro +2 more
core
Hierarchical Structured TiO2/Boron‐Doped Diamond for Efficient Photo‐Electrocatalytic Degradation
Rare Metals, Volume 45, Issue 5, May 2026.ABSTRACT The discharge of refractory organic dye wastewater poses a significant threat to the ecological environment, necessitating the development of efficient treatment technologies. Herein, a uniform TiO2 array (TiO2‐AR) electrode is fabricated using a combination of magnetron sputtering and a mask plate process with a boron‐doped diamond (BDD ...
Haiming Sun +10 more
wiley +1 more source