摘要
本文从探讨土地自然生矿潜力的角度人手,根据普定县的自然条件和生产特征,建立了光,温、水和土壤肥力对农业自然生产潜力的影响模型,并计算了普定县19种主要耕作土种的农业自然生产潜力。经分析发现:影响普定县农业自然生产潜力的主导限61因子是土壤肥力(含有机质)不足;其次是温度条件;水分条件只对冬小麦的影响比较大,对水稻和玉米产量的限制作用并不明显。这些分析结论将为苷定县分阶段地进行土壤改良提供科学依据。
Based on the natural conditions and productive features in Puding county,the models for light,temperature,water and soil fertility affecting natural productive potentiality of agriculture are established,and the agricultural natural productive potentialities of main cultivated soils are also calculated. The results show that the dominant limiting factors influencing natural productive potentiality of agriculture in Puding county is soil fertility (contain: organic matter);the second arc temperature conditions;the third is precipitation condition. It would be scientific bases for soil improvement by stages in Puding county.
出处
《贵州科学》
1995年第2期8-14,共7页
Guizhou Science
基金
贵州省"八五"攻关项目部份内容
关键词
农业
自然生产潜力
限制因子
土壤
分类
Natural productive potentiality of agriculture
limiting factor
Puding county
