甘肃农业大学农耕特色库

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神木县近55年气候特征及变化分析: 作者： 吴胜勇 来源： 陕西气象 年份： 2016 文献类型： 期刊 关键词： 神木县 气候特征指导农业生产; 描述： 利用神木县1957—2011年气温、降水、相对湿度、日照时数等气象观测资料,分析神木县气候特征及变化规律。结果表明,年平均气温呈上升趋势,四季中冬季气温升高趋势最显著;年降水量呈缓慢下降趋势,年际

黄土高原坡耕地不同耕作模式生态效应研究: 作者： 杨凯 来源： 西北农林科技大学 年份： 2009 文献类型： 学位论文 关键词： 耕作模式黄土高原坡耕地生态效应; 描述： teau the seeding season is cold and little rainfall. Soil temperature,moisture and fertilizer is an important factor in crop yield. So in this area dissemination conservation tillage of importance. Most of former researches in comparison between conservation tillage and conventional tillage. This experimentation compare with sereval conservation tillage's difference. Through this comparison, wind-water erosion in the Loess Plateau ecologically fragile areas and application of a reasonable choice of different measures to provide a reference of farming with a view to achieving the sustainable and health development of agriculture. In this study, selection of test sites in the Loess Plateau in northern China typical wind-water erosion area Shenmu, a no-tillage, straw mulch, plastic film mulching, mulching ridge, ridge of the five kinds of different measures of conservation tillage experiment, observe ground temperature,soil nutrients,soil moisture,yeild and soil and water loss.; 全文：不同的耕作措施提供参考,以期实现该地区农业的健康持续发展。本研究的试验地点选在中国北方黄土高原典型的水蚀风蚀区神木县,进行了免耕、秸秆覆盖、地膜覆盖、起垄地膜覆盖、起垄5种不同的保护性耕作措施试验,对实行

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