Results 1 to 10 of about 119 (112)
Shuitu Baochi Xuebao, 2019 引黄水量的执行性削减加剧了河套灌区农业水资源的紧缺程度及土壤次生盐渍化问题。采取合理的节水灌溉模式对缓解河套灌区农业用水紧张、改良盐渍化土壤、营造适宜作物生长的土壤环境具有重要意义。为明晰垄膜沟灌对河套灌区土壤盐分及硝态氮运移特征的影响及调控效果，通过4次田间沟灌试验，对比研究了高水、中水、低水及高肥、低肥6个组合处理条件下土壤盐分以及土壤硝态氮的变化特征。结果表明：垄膜沟灌条件下灌水量对土壤全盐量的影响高于施肥量，中水处理土壤全盐量始终维持在一个适宜且稳定的水平 ...
李成 +5 more
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Shuitu Baochi Xuebao, 2017 为充分利用自然资源，减轻土壤盐渍化，提高农田生产力，在内蒙古河套灌区以春小麦、玉米和向日葵单作为对照，监测春小麦—向日葵复种对土壤水分、盐分和农田生产力的影响。结果表明：春小麦收获前，春小麦—向日葵复种和春小麦单作0—100 cm土层土壤水分低于玉米单作和向日葵单作；春小麦收获后春小麦—向日葵复种、玉米单作和向日葵单作耕层土壤水分高于春小麦单作，20—80 cm土层土壤水分则低于春小麦单作。春小麦收获前不同种植模式的土壤盐分变化剧烈，春小麦收获后则变化平缓。不同种植模式主要影响0—40 cm土层土壤盐分，
白岗栓, 邹超煜
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Shuitu Baochi Xuebao, 2017 土壤水热状况是影响干旱区作物产量的主要因素，围绕膜下滴灌土壤水热运移情况，以河套灌区玉米为研究对象，开展了2年的田间试验，研究了膜下滴灌条件下不同覆膜耕作方式对土壤水热运移规律的影响。试验设垄作全膜（LQ）、垄作半膜（LB）、平作全膜（PQ）和平作半膜（PB） 4个处理，采用烘干法测定0—120 cm土壤含水量，ECH2O-5TE探头测定0—120 cm土壤温度。试验结果表明：在苗期，0—20 cm土层LQ土壤含水率较LB、PQ和PB分别提高了14.4%，23.8%和26.9%；拔节期，0—40 ...
齐智娟 +4 more
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Ecological Service Function Evaluation of Urban Greening Shrubs in Guanzhong Region, Shaanxi Province [PDF]
, 2023 [Objective] The landscapes and ecological service functions were comprehensively evaluated in order to provide scientific guidance for the selection of urban greening shrub species. [Methods] Several indexes including landscape service functions (such as
Gai Shuaizi +5 more
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Effects of Winter Irrigation on Soil Water-heat-salt Migration and Crop Growth During Freezing-Thawing Period in Qingtongxia Irrigation District of Ningxia [PDF]
, 2023 [Objective] The effects of winter irrigation on soil water-heat-salt migration and crop growth during the freezing-thawing period were analyzed in order to provide a scientific basis for controlling soil salinization, and to ensure food security ...
Han Yuping +4 more
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Effects of Bio-based Compound Amendments on Overall Soil Fertility of Coastal Saline Soils [PDF]
, 2022 [Objective] The effects of bio-based composite amendments on the physicochemical properties and microbiota of saline soils in the Yellow River delta and the Northern Jiangsu mudflats were determined in order to provide a scientific reference for the ...
Gan Quanfeng +5 more
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Effects of Desulfurized Gypsum Applied Combined with Polyglutamic Acid on Improving Saline Soil [PDF]
, 2023 [Objective] The effects of desulfurized gypsum and polyglutamic acid (γ-PGA) improves saline soil were studied in order to provide a theoretical and technical basis for improving saline soil in Northwest China.
Li Hongyi +4 more
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基于SaltMod模型的河套灌区解放闸灌域土壤盐分综合调控措施
Shuitu Baochi Xuebao, 2021 为了探究河套灌区解放闸灌域土壤盐分的综合调控措施，以河套灌区解放闸灌域为例，基于SaltMod模型研究了灌溉水矿化度、咸淡水混合比例、排水沟深度以及渠道衬砌水平对作物根层土壤盐分的影响。结果表明：根层土壤盐分随着灌溉水矿化度的增大而增加，1.0 g/L的地表微咸水较适合本研究区灌溉；淡水（黄河水）和地下微咸水（矿化度为2.2 g/L）混合灌溉比为1：1时，既增加了地下微咸水的利用且地下水埋深下降到2 m左右的相对稳定平衡状态；当排水深度在1.5~2.0 m，渠系利用系数达到0.7时，根层盐分显著降低 ...
翟中民, 史文娟, 郭建忠, 刘璐
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Comparison of Different Methods for Calculating Evapotranspiration of Crops in the Yellow River Delta [PDF]
, 2017 准确估算各地区的参考作物腾发量(ET_0)是农业灌溉设计和节水规划中必不可少的内容。利用黄河三角洲地区4个典型气候区的气象资料,选用5种计算方法(P-M, FAO-79Penman、Priestley-Taylor,FAO-24Penman和 Hargreaves-Samani)计算了 ET_0,并以P-M方法作为标准,对其他方法进行了评价。结果表明,在黄河三角洲各气候区FAO-Penman法估算的ET_0较Priestley-Taylor方法更接近于P-M法的计算结果,并且计算精度较高,误差在3 ...
刘虎 +6 more
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Shuitu Baochi Xuebao, 2021 为了研究垄膜沟灌系统下不同灌水量对河套灌区土壤水盐运移规律及春玉米生长特性的影响，于2019年4—10月在河套灌区曙光试验站开展田间试验，通过布设5个典型灌水量（T1，200 mm；T2，275 mm；T3，350 mm；T4，425 mm；T5，500 mm），深入研究垄膜沟灌土壤水盐运移特征及其对春玉米产量和水分利用效率（WUE）的影响，尝试寻求轻度盐渍化农田的垄膜沟灌适宜灌水量。结果表明：T4与T5处理0—120 cm土层的土壤贮水量接近，T5处理的玉米耗水量显著高于其他处理。T1 ...
罗帅 +4 more
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