Results 1 to 10 of about 144 (108)
Shuitu Baochi Xuebao, 2007 以黄土高原沟壑区的苹果园为研究对象,对6～36 a苹果园土壤重金属含量状况进行研究,结果发现,该区苹果园的高投入种植管理模式,能够影响重金属在土壤中的迁移与富集,使土壤重金属含量发生明显变化.土壤Cu含量随树龄增加而增加,20 a以上的土壤-果树系统对土壤Cu的输入与输出趋于平衡,Cu含量变化不大,且耕层土壤Cu含量较高.Cr含量随树龄线性递增,36 a果园0～20 cm,20～40 cm和40～60 cm 土层Cr含量分别比6 a果园增加27.14%,17.09%和19.17 ...
李丽霞 +4 more
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Influence Mechanism of Ionic Interface Reaction on Soil Porosity [PDF]
, 2023 [Objective] The changes in surface charge properties of soil particles and the net force between particles were analyzed, in order to elucidate the influence mechanism of particle interaction on pore conditions.
Ding Wuquan +3 more
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Utilization Potential of Water Resources in Check Dams in Gansu Province [PDF]
, 2022 [Objective] The potential of check dams to retain silt and utilize water resources were analyzed in order to provide a basis for water resource utilization and management of check dams.
Jin Feng +5 more
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聚水阻渗措施对矮砧密植苹果园土壤水分、硝态氮及果树细根的影响
Shuitu Baochi Xuebao, 2023 为提高土壤水肥利用效率,探索适宜渭北地区苹果园发展的聚水阻渗措施。通过大田试验,以矮砧密植苹果园为研究对象,分析不同聚水阻渗措施对土壤水分、硝态氮和果树细根的影响。结果表明:在垂直方向,防渗层、起垄+防渗层、起垄+覆膜+防渗层处理均可有效提高0-40 cm土层土壤含水量、硝态氮含量和细根根长密度,其中,起垄+防渗层和起垄+覆膜+防渗层处理土壤含水量和细根根长密度高于防渗层处理,硝态氮含量则低于防渗层处理。在50-100 cm土层,3种处理措施均降低土壤硝态氮含量,有效缓解硝态氮淋溶累积。在水平方向上 ...
陈东凯, 骆汉, 谢永生, 吕佼容
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Shuitu Baochi Xuebao, 2023 为探明间作豆科作物对幼龄果园土壤水分、硝态氮含量以及树木生长的影响,并对黄土高原旱作果园土壤肥力提升与可持续发展提供指导,以黄土丘陵区苹果/黄豆复合系统为研究对象,通过测定种植黄豆整个生育期内试验小区水分、硝态氮含量以及果树叶片含氮量和生理指标的变化来评价不同间作密度黄豆对果树生长的影响。结果表明:(1)相较于清耕果园,中密度间作在黄豆花期前对果园土壤水分含量有一定的提升作用,而高密度间作加剧行间水分的消耗,显著降低土壤含水量。(2 ...
安庆蓉 +5 more
doaj
Shuitu Baochi Xuebao, 2020 通过采集胶东地区不同年限苹果园0—100 cm土层土壤，分析了不同种植年限苹果园土壤全磷、有效磷、无机磷含量和无机磷组分特征，以期为苹果园科学施用磷肥提供依据。结果表明：胶东地区苹果园0—40 cm土层土壤全磷、无机磷、有效磷平均含量为0.76 g/kg，681.10 mg/kg，73.05 mg/kg。种植年限显著影响了苹果园土壤磷含量，随着种植年限的增加耕层土壤全磷、有效磷和无机磷含量呈上升趋势。不同种植年限的苹果园土壤全磷、有效磷及各无机磷组分均随着土层的加深整体呈递减趋势。无机磷组分主要以Al ...
贾志航 +5 more
doaj
Evaluation of the Effectiveness of Soil Improvement Measures in Apple Orchards on the Loess Plateau: A Meta-Analysis [PDF]
[Objective] Soil acidification, structure and fertility degradation and poor water-holding capacities are common problems in the apple orchard on the Loess Plateau, effective soil improvement techniques are crucial for enhancing soil quality, and ...
DUAN Shunxia +3 more
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Analysis of differences in physicochemical properties and bacterial community characteristics of rhizosphere soil in apple orchards under different cover treatments [PDF]
[Objective] Cover cropping is a widely adopted soil management technique used in fruit tree cultivation. By planting specific vegetation to cover the ground, this practice significantly influences nutrient cycling, microbial activity, and biodiversity ...
CAI Rongjing +10 more
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Shuitu Baochi Xuebao, 2021 面对苹果园大量施肥带来的潜在环境问题，在黄土高原沟壑区典型流域，分别选取不同树龄和地貌类型的苹果园，分析土壤水分含量和土壤矿质氮在土体剖面中的变化，为促进该流域农业发展提供相关数据支持。在陕西长武县王东沟流域，分别选取不同树龄（14，18，23，28，32树龄）和地貌类型（塬、梁、坡地）的果园，用直径为4 cm的土钻，在每株果树周围距离树干1 m处，采集15个不同样地0—400 cm土层样品，12个果园样地0—600 cm土层样品，分别测定土壤水分、硝态氮、铵态氮含量。结果表明：随着树龄的增加，0 ...
路远, 党廷辉, 成琦
doaj
Soil Hydrothermal Characteristics of Orchard Based on Leaf Area Index Coupled with STEMMUS Model [PDF]
[Objective] As a key parameter in the simulation study of ecosystem water cycle process, rapid dynamic simulation of leaf area index (LAI) can solve the limitation that the coupled soil water-vapor-heat-air model STEMMUS (simultaneous transfer of energy,
GAO Xiaodong +3 more
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