Abstract: Huajiang gorge is a typical comprehensive control area of karst plateau rocky desertification in Guizhou Province. To understand soil nutrient status and the correlation of physical and chemical factors of different restoration patterns, soil samples from 0-10, 10-20 and 20-30 cm under six restoration patterns were collected, with abandoned land as control. The results showed that soil organic carbon, total N, total P and total K contents of the six different restoration patterns were increased by 72%, 37%, 60% and 72% compared to the abandoned land, respectively. Soil available N, available P and available K contents were increased by 61%, 10% and 106%, respectively. Soil organic carbon and nutrient contents in different soil layers were significantly different; soil organic carbon, total N, total P, total K, available N, available P and available K contents in the 0-10 cm layers were 1.52, 1.14, 1.20, 1.06, 1.41, 1.27, and 1.29 times of those in the 20-30 cm layer respectively, showing a surface accumulation effect. Correlation analysis showed that soil organic matter and bulk density were the key factors in the soil physicalchemical factors of the gorge area, and vegetation factors and soil factors were the two important factors that need to be taken into account in screening restoration patterns and planting in rocky desertification control areas.

Key words: Bt cotton, insecticidal protein, heat and drought stress, proteomics