关键词: 棕紫泥土, 作物生长, 影响因子

Abstract: The area brown purple soil of Sichuan province is about 166.42×10⁴ hm², which is acupied 39.37% of calcareous purple soil sub-kind. Dry farmland resource has a vital status in Sichuan province. The troughput is very large, there are many matters in it. The nutrient supply and main nutrient obstracte factors of brown purple soil of Sichuan province are studied in this experiment following the systematic approach. The results show that N.P is the limiting factors on crop growth, and the supplied N.P is the important increasing production measure, other nutrient factors becoming or not the limiting factors depended different crops.

Key words: brown purple soil, crop growth, limiting factors