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近几年,人们对旱作农业的认识有了较大突破,多数论述都把重点从“旱”移到了“薄”上,认为当前生产中,降水的潜势还远未被充分利用,主要矛盾应是土地瘠薄和缺肥,在生产措施上应重点抓土壤培肥、合理施肥和耕作保墒。这些看法是对半干旱地区“雨养农业”中低产原因认识的深化。但是,在如何广开肥源合理用肥和培肥土壤上,还有不少问题需要探讨。1983年11月,我们在陕西关中渭北旱原的黄陵、澄城和甘肃中部的定西三县进行了肥料调查,木文即根据调查资料,对以上地区当前肥料中的几个主要问题,做些初步分析和讨论。
In recent years, there has been a big breakthrough in understanding of dry farming. Most of the discussions have shifted the focus from “drought” to “thinning.” In the current production, the potential for precipitation is far from being fully utilized. Majority Contradictions should be barren land and lack of fertilizer, production measures should focus on soil fertility, fertilization and conservation of soil moisture. These views are deepening our understanding of the causes of low and medium production in Rainfed Agriculture in the semi-arid region. However, there are still many problems that need to be explored on how to expand fertilizers and fertilize soil reasonably. In November 1983, we conducted fertilizer surveys in Huangling, Chengcheng, and Weixi three counties in the central part of Gansu in the Weibei drylands of Shaanxi Province. Based on the survey data, we analyzed several major problems in the current fertilizers in these areas, Do some preliminary analysis and discussion.