Results 11 to 20 of about 2,221 (138)
Effects of PBAT on Soil Water and Salt in Maize Root Zone and Maize Yield in Saline-alkali Land [PDF]
[Objective] In order to reduce soil pollution caused by plastic film, the application effect of using PBAT fully biodegradable plastic film instead of ordinary PE plastic film combined with drip irrigation to grow maize in mild secondary salinized soil ...
HOU Jiana +6 more
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A new disease resistance, early ripening tomato variety – Xia Fen (pink colour tomato) [PDF]
摘要利用黄粉选6 株系作母本, 8512 作父本配制而成的一代杂种一霞粉, 熟期较对 照苏抗9 号早3 一5天, 抗烟草花叶病毒病, 早熟、丰产, 每66.7m, 早期产量263kg, 总产量4436kg。果实圆整, 品质好, 单果重150 一1809, 适宜保护地早熟栽培及春秋季露地 栽培。 现已在江苏 安徽、山东、浙江、天津、江西、上海、湖北等省市大面积推广。关键词番茄; 霞粉 ...
Long, M, Lu, C, Xu, H, Yang, R, Yu, W
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Development of Certified Reference Materials of Phthalates in Soils [PDF]
Phthalates (PAEs) are a class of organic pollutants that are continuously released and present in the environment and are listed as priority-controlled pollutants.
Chunxue XU +6 more
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采用旱棚人工控水,蒸发桶整体称重法,对4种地面覆盖材料、50%覆盖度条件下,土壤水分蒸发与移动性能进行了研究。结果表明,在持续干旱时段,覆盖不仅改善了覆盖区土壤水分状况,而且强化了覆盖区与相邻非覆盖区下层土壤液态水的运移与再分布,提高了相邻非覆盖区下层土壤水分状况,有利于减轻持续干旱对造林成活和幼林生长的威胁。通过非线性参数拟合,首次求得了表征塑料地膜、渗水地膜、干草和塑料泡膜4种地面覆盖材料对土壤蒸发的阻抗特征参数,为建立不同覆盖材料在局部覆盖条件下的土壤蒸发量模型奠定了基础 ...
王进鑫 刘广全 王迪海
doaj +2 more sources
Synergistic Effects of No-tillage Combined with Mulching on Improving Soil Moisture Use and Potato Yield [PDF]
[Objective] Considering the severity of both spring drought and spring cold, and shallow effective topsoil in the southern mountainous areas of Ningxia Province, synergistic effects of no tillage combined with mulching on improving soil moisture use and ...
DUAN Ruibing +5 more
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为了研究不同覆盖方式对旱地农田土壤水温变化规律和降水高效利用的影响,以探求旱地玉米最佳覆盖种植方式,于2013—2015年在山西省寿阳县连续定点定位设置秸秆地膜二元覆盖(MS)、宽膜覆盖(FM)、窄膜覆盖(NM))3个不同覆盖种植方式,以传统露地平作为对照(CK),研究不同覆盖种植模式对旱地玉米土壤温度、水分和产量的影响。结果表明:(1)二元覆盖昼夜温差比宽膜覆盖、窄膜覆盖和露地变化幅度小,二元覆盖昼夜相差8.8 ℃;在播后25~35 d,15 cm土层的土壤温度由19.1 ℃上升到26.5 ...
李娜娜, 池宝亮, 梁改梅
doaj
Review of techniques and case studies for saline-alkali land amelioration in the coastal regions of China [PDF]
Soil salinization is one of the major challenges in agricultural production and ecological development. With the rapid development of China’s coastal areas, land resources are becoming increasingly scarce, creating an urgent need for the improvement and ...
Hang LYU +5 more
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首次在《合成材料》课程中导入环境材料概念,认为在该课程中不仅要阐述高分子材料的合成,还应讲述聚合物的“降解”及可控降解聚合物的合成,进而在课程中导入环境保护意识,导入生态平衡观念,导入可持续发展思想,这样才能形成一个完整的《合成材料 ...
戴李宗, 邹友思
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为了探寻半干旱区垄沟集雨种植控制水土流失和增产的机理,利用前2年(2012—2013年)日降雨量、实测径流和修正SCS—CN模型,率定集雨垄的径流模型参数CN、λ和α,然后利用后3年(2014—2016年)日降雨量和实测径流资料检验该模型有效性,预测不同覆盖材料(土壤结皮、生物可降解地膜和塑料地膜)和不同垄宽(30,45,60 cm)集雨垄的径流量。结果表明,土壤结皮覆盖集雨垄、生物可降解膜覆盖集雨垄和塑料地膜覆盖集雨垄的CN取值范围分别为82.0~82.9,97.9~98.8,98.3~99.9 ...
赵武成 +7 more
doaj
对崇左市糖业集群进行“SWOT“分析,即优势(STrEngTH)、劣势(WEAknESS)、机遇(OPPOrTunITy)、威胁(THrEATS)等四个方面的分析,并在此基础上提出了崇左市糖业集群发展六大措施:第一,抓好结构调整,提高种植技术;第二,构建七大循环系统和六条生态链,做长产业链,提高糖业经济效益;第三,实施重点产业培植,加大产业扶持力度;第四,大力推进蔗糖业产业化经营;第五,改善生产条件;第六,协调上级区域,建立食糖价格调节基金。广西教育厅面上项目“广西新兴城市产业集群发展研究”的研究成果 ...
袁竹连 +3 more
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