[荞麦钩翅蛾]宁南山区荞麦钩翅蛾发生程度预报研究 植物保护-农业科技-文献数据库 关键词: 荞麦钩翅蛾；加权列联表分析；发生程度预测；宁南山区； [gap=539]ds: Spica parallelangula Alpheraky；contingency table；forecast occurrence degree；mountainous area of southern Ningxia；
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宁夏南部山区 the mountainous area of southern Ningxia
宁南半干旱山区 semiarid hilly area of southern ningxia
宁夏南部山区黄土高原 the loess plateau in the south of Ningxia
宁夏南部山区农田水分 Mountain Area Of South Ningxia
Finally, we put forward some contermeasures on how to achieve Ningnan area’s land sustainable utilization.
最后，就实现宁南山区土地可持续利用的政策方面提出了对策和建议。
参考来源 - 宁夏南部山区土地资源可持续利用研究Chapter III of the Prefecture mountain ecology background and analysed the status quo.
第三章对宁南山区生态环境的背景及现状进行了分析。
参考来源 - 宁夏南部山区生态经济建设中的可持续发展研究·2,447,543篇论文数据，部分数据来源于NoteExpress
宁南山区干旱频繁，严重影响农业生产。
Drought occurs frequently and influences agricultural production in Ningnan Mountainous region.
宁南山区地表结构复杂，是典型的温带大陆性半干旱偏旱季风气候。
The land structure is complicated in mountain area of south Ningxia, under a typical temperate continental semiarid and arid monsoon climate.
干旱、低产、人口膨胀，是造成宁南山区生态环境恶化和经济发展缓慢的重要原因。
Drought, low production and population expansion are important causes of the eco environment worsening and slow economic development in the dryland of Southern Ningxia.
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