摘要
沙尘暴主要是春季发生的危害我国及东亚地区的灾害性天气现象。沙尘暴中的主要成分沙尘是直径d <10 0 μm的微细颗粒。这些颗粒主要来自于那些经过传统方法翻耕、土壤表面缺少覆盖物的农田或退化的草原。防御沙尘暴的主要措施是在裸露的农田上实行作物残茬覆盖 ,或种植作物实行绿色覆盖 ;在退化的草原上种植牧草 ;辅助于造林 ,建立防风屏障。推广免耕法是世界各国治理沙尘暴的有效方法。中国农业大学在河北省丰宁县坝上作了春小麦免耕试验 ,取得了理想的效果。该研究的主要目的是通过理论与实践的结合 ,使我国防治沙尘暴的工作走上科学。
Sandstorm is the main weather that is harmful to the East Asian region including China. Among the components of sandstorm, the particles with diameter of smaller than 100 μm are the most harmful, which mainly come from farmland or grassland. Crop residual straw mulching and green crop mulching in exposed field, or planting forages in the deteriorated grassland are the major measures to control sandstorm. Construction of a barricade to wind via planting trees is an applicable method as well. Free tillage technique is also a worldwide practical method to contol sandstorm. The expected effects on the free tillage experiments of the spring wheat field carried out by China Agricultural University was achieved in Fengning County, Hebei Province. The main aim of the study is to make the work of sandstorm control go ahead scientifically in China.
出处
《中国农业科学》
CAS
CSCD
北大核心
2002年第4期440-446,F003,共8页
Scientia Agricultura Sinica
关键词
沙尘暴
发生成因
防御策略
Sandstorm
Formation causes
Control measures
