Results 81 to 90 of about 18,319 (211)
Greenhouse Gas Mitigation and Yield Response to Biochar-Microbial Amendment in Saline-Alkali Soil [PDF]
[Objective] To investigate the effects of combined application of biochar and microbial fertilizer on greenhouse gas emissions and sunflower yield in saline-alkali soil under plastic film mulching and drip irrigation.
JI Wentao +6 more
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Factors That Influenced Coping With COVID‐19 During the Pandemic in Botswana
World Medical &Health Policy, Volume 18, Issue 1, March 2026.ABSTRACT This paper forms part of the broader Global South study, Personal and Family Coping with COVID‐19 in the Global South, which examines psychosocial and behavioral responses to the COVID‐19 pandemic. In Sub‐Saharan Africa, the pandemic posed significant psychological, social, and economic challenges, with important implications for preparedness ...
Magen Mhaka‐Mutepfa +3 more
wiley +1 more source
西南喀斯特退化天坑负地形倒石坡的土壤微生物分布特征 [PDF]
, 2019 喀斯特退化天坑倒石坡作为一种负地形坡面,在退化天坑植物避难所的物种多样性保护中发挥着重要作用。研究坡面土壤微生物群落功能多样性,有助于阐明土壤微生物群落生态特征和空间分布规律,探索土壤微生物与植物多样性关联,挖掘退化天坑负地形倒石坡的生物多样性宝库价值。研究以云南沾益天坑群中的退化天坑-巴家陷塘为研究对象,运用Biolog微平板技术,分析坡面环境梯度(坑口﹑上坡位﹑中坡位﹑下坡位以及坑底)的土壤微生物群落功能多样性差异。结果显示,坑底土壤微生物群落的功能多样性指数(Shannon指数﹑Simpson指数﹑
江聪 +4 more
core
Shuitu Baochi Xuebao, 2019 为了探究夏尔希里自然保护区不同植被类型土壤水源涵养功能特征，在保护区内选取具有代表性的草地、灌木、森林样地共13个，以不同植被类型的土壤为试验材料，采用野外调查与室内试验相结合的方法，分别对保护区内的草地区、灌木区、森林区的土壤水源涵养能力进行定量分析。结果表明：（1）随着土层深度的增加，研究区草地土壤容重逐渐增大，在土壤层0—10 cm处出现最小值为0.69 g/cm3。草地土壤持水能力和蓄水能力变化规律一致，均表现为0—10 cm > 10—20 cm > 20—30 cm。（2）随着土层深度的增加，
刘西刚, 王勇辉, 焦黎
doaj
Shuitu Baochi Xuebao, 2011 通过四川瀑布沟水电站消落区典型土壤磷释放室内模拟试验,研究淹水及干湿交替条件下消落区土壤性质变化情况以及土壤性质与磷释放之间的关系,以期为预防水库水体富营养化,水库消落区合理利用与科学制定管理对策提供参考。结果表明:淹水能够提高土壤活性氧化铁(Feox)含量,淹水风干后土壤Feox含量降低至淹水前的水平;淹水后Feox变化幅度为:旱地>水田>果园,紫色土>冲积土。土壤磷吸持饱和度(DPS)与无定形铁铝氧化物Alox密切相关;土壤最大吸磷量(Qm)淹水时最高增加至2 758.01 mg/kg ...
夏建国, 仲雨猛, 曹晓霞
doaj
Shuitu Baochi Xuebao, 2021 为明确土壤干湿交替环境下保水剂与土壤颗粒之间的作用方式及保水剂对土壤结构和水分有效性的影响。通过土柱模拟试验，研究连续失水—复水条件下，不同粒径（>0.85，0.6~0.85，0.30~0.45 mm）保水剂对土壤水分特性、土壤团聚体分布和结构稳定性的作用，以及保水剂—土壤混合体价键结构的微观变化特征。结果表明：第1次（T1）和第2次（T2）失水取样阶段，除T2阶段的最小粒径处理外，其余各粒径保水剂促使土壤相对含水量较对照显著增加72.9%以上 ...
纪冰祎 +5 more
doaj
Shuitu Baochi Xuebao, 2000 四川省攀枝花市盐边县二滩水电站红格移民安置区农耕地土壤水分性质与抗旱性能的研究结果表明，与当地土壤肥力水平相对较高的菜园土和水稻土相比较，安置区土壤层次性被打乱，无保水性的犁底层存在，水分渗漏强；土壤最大吸湿水，萎蔫系数，田间持水量和有效水含量与土壤〈０．０１ｍｍ物理性粘粒含量呈正相关，土壤保水性能主要取决于土壤〈０．０１ｍｍ物理性粘粒含量，只有有机质含量较高，结构良好的土壤 ...
魏朝富 李瑞雪
doaj
Effect of CaCl2 Substitution of NaCl Combined with Sodium Alginate on the Gelling Properties of Shrimp Surimi [PDF]
In order to reduce the content of NaCl in shrimp surimi while improving its gelation properties, the effects of different levels of NaCl substitution with CaCl2 combined with sodium alginate (SA) on the protein structure and gelation properties of shrimp
WANG Yueyue, LIU Ying, JIANG Pengfei, FU Baoshang, QI Libo, WANG Limin, GE Jinghui, SHANG Shan
core +1 more source
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其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 ...
汪建飞 李粉茹 金德胜
doaj +2 more sources
Effect of Caspase-3 Inhibitor on Water Retention and Tenderness of Tan Sheep Meat during Postmortem Aging [PDF]
In order to investigate the effect of caspase-3 on the water retention and tenderness of Tan sheep meat during postmortem aging, the right hind leg meat of Tan sheep was injected with Ac-DEVD-CHO, a caspase-3 inhibitor, or 0.8% NaCl (control group), and ...
MA Meng, MA Jiarong, GAO Shuang, LIANG Yanqun, LUO Ruiming
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