Abstract:

This study provides technical guidance for the efficient cultivation of Corydalis saxicola in Zhaotong area by exploring its requirements for mulching and light. Using the seedlings of C. saxicola as test materials, the growth and yield of C. saxicola were measured under different mulching treatments (mulching, no mulching) and shade treatments (0%, 30%, 50%, 70%, 90%), and evaluated comprehensively. The results showed that the average survival ratio of transplanting in the mulching treatment group reached 94.44%, which was 9.67% higher than that of no mulching treatment group. Fresh weight and dry weight of the whole plant under the mulching treatment were 0.728, 0.150 kg/m², respectively, which were 65.45% and 40.59% higher than those under the no mulching treatment. Fresh weight and dry weight of the whole plant, fresh weight and dry weight of rhizome, plant height, capsule length, the number of inflorescences, the number of capsules, and the number of seeds were all up to the maximum value under 50% shading treatment. By stepwise regression analysis and path analysis, it was found that plant height, the number of capsules, capsule length, and the number of inflorescences were the decisive factors of the number of seeds, and their positive correlation with the number of seeds increased in turn. In conclusion, mulching treatment and 50% shading treatment are the best for transplantation, growth and yield of C. saxicola. The results can provide a theoretical basis for the efficient cultivation of C. saxicola in Zhaotong area.

Key words: Corydalis saxicola, film mulching, shading degree, growth, yield