Results 61 to 70 of about 85,362 (203)
Shuitu Baochi Xuebao, 2004 以干旱区绿洲农田冬小麦水分胁迫试验为基础,研究了不同水分胁迫条件下的冬小麦生长发育、水分利用以及土壤水分运动特征,建立了含有根系吸水项的一维土壤水动力学模型,模拟了不同水分胁迫条件下冬小麦蒸腾、棵间蒸发、根系吸水、根系生长以及田间土壤水分运移过程。结果表明:在冬小麦生育前期、中期根系吸水主要在80cm以上,生育后期根系对下层土壤水分吸收量增加,但所占比例很小。根据实测根系生长资料分析水分胁迫下生育中期根系受到水分胁迫,在生育后期恢复灌水后根系早衰,生长缓慢 ...
盛钰 赵成义 蒋平安 贾宏涛
doaj +2 more sources
Shuitu Baochi Xuebao, 2019 为探索河套灌区不同盐分土壤苜蓿生长的适宜水分展开盆栽试验，设置3个水分水平、3个盐分水平和1个对照处理CK，监测不同水盐处理苜蓿现蕾期至初花期土壤贮水变化量、品质及产量。结果表明：（1）相同盐分条件下，植株株高、地上生物量、地下生物量、耗水量及干草产量随灌水量的增加而增大，但苜蓿的增产效应明显降低；相同水分条件下，随盐分增加，苜蓿耗水量及地下生物量整体呈现先增大后减小的变化趋势。土壤含盐量超过3 g/kg，土壤中剩余水分显著增加，且随灌水量增加逐渐增加。（2）土壤含盐量1~3 g/kg ...
侯晨丽 +5 more
doaj
河西绿洲膜下滴灌调亏对食用向日葵耗水特征、光合特性及品质的影响
Shuitu Baochi Xuebao, 2020 于2019年在张掖市益民灌溉试验站进行食用向日葵膜下滴灌调亏大田试验，探究在现蕾期、开花期和灌浆期充分灌溉条件下，苗期轻度—成熟期（轻度、中度）水分调亏、苗期中度—成熟期（轻度、中度）水分调亏、苗期重度—成熟期（轻度、中度）水分调亏处理分别对食用向日葵耗水、光合特性、品质及产量的影响，为河西绿洲冷凉灌区优质高产高效种植食用向日葵提供理论依据。结果表明：（1）苗期和成熟期食用向日葵的阶段耗水量、耗水模数、日耗水强度均随水分调亏程度增加而降低，与充分灌溉相比，苗期水分调亏处理阶段耗水量、耗水模数 ...
王璐 +6 more
doaj
International Journal of Applied Linguistics, EarlyView.ABSTRACT While English‐medium instruction (EMI) and English for Academic Purposes (EAP) courses are designed to promote language and content learning, their prevailing English‐only approaches often undermine students’ learning motivation. Against this backdrop, translanguaging has gained recognition as an effective pedagogical practice to support ...
Yihai Wen, Fan Fang
wiley +1 more source
比抵抗映像法を用いた土壌水分の三次元的な時空間変動に関する研究 [PDF]
, 1999 Thesis (Ph. D. in Science)--University of Tsukuba, (A), no.
Zhou Qi You, 周 啓友
core
Survey on Spatial Variability of Surface Soil Moisture and Soil Physical Properties in a Sloping Grassland Field [PDF]
, 2003 Spatial variability of surface soil moisture, bulk density, satureted hydraulic conductivity, and penetration resistance (cone index) in a sloping grassland field were surveyed.
Moroizumi, Toshitsugu
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International Journal of Applied Linguistics, EarlyView.ABSTRACT Many existing rubrics for L2 argumentative writing prioritize form‐based linguistic accuracy and complexity while insufficiently addressing substantive argumentative rigor and effectiveness. This limitation is further complicated by cross‐cultural variation in rhetorical conventions and educational practices, which challenge the direct ...
Zihan Xu, Peiyun Liu
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Shuitu Baochi Xuebao, 2008 采用烘干法及WP4水势仪对黄土高原水蚀风蚀复合区人工林下土壤重量含水量及水势进行测定,从土壤水分数量和能量两方面分析该区土壤水分时空分布和动态变化特征,并且通过实测数据对不同树种土壤水分特征曲线进行拟合,旨在为该区今后植被建设及生态用水提供理论参考。结果表明,各树种在0-300 cm土层土壤含水量随深度增加而逐渐降低,并趋于稳定。0-30 cm土层土壤含水量变化剧烈,30 cm以下土层土壤含水量逐渐降低,并趋于稳定在3.00%~5.00%。土壤水分受降雨量及其分配影响显著,观测期内土壤储水量盈余26.7
周海光 +4 more
doaj
Hydrolyzable Tannins in Bark of Rhus trichocarpa Selectively Inhibit Eukaryotic Glucosamine-6-phosphate Synthase (GFAT) from Saccharomyces cerevisiae [PDF]
, 2005 糖尿病による高血糖状態はへキソサミン合成経路を異常に亢進させ,様々な糖尿病合併症の発症と密接に関係している。本研究では,この合成経路の律速酵素であるグルコサミン-6-リン酸合成酵素(L-グルタミン:D-フルクトース-6-リン酸アミドトランスフェラーゼ;GFAT)の活性を阻害するヤマウルシ(Rhus trichocarpa MIQ.)樹皮の成分の単離・精製と構造解析を行い,この植物に含まれる阻害物質は,加水分解件タンニンに属する1,2,3,4,6-pentagalloyl-β-D-glucoseと3-m ...
尾崎 宏基, 荒舘 忠
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Journal of Sociolinguistics, EarlyView.ABSTRACT This study investigates how ordinary Taiwanese netizens perform linguistic authority by policing others’ use of Mainland Chinese expressions in everyday online interactions not originally intended to be political and how such policing is subsequently supported, resisted, or (de)legitimized in the context of Taiwan–China relations. Three orders
Hsi‐Yao Su
wiley +1 more source