关键词: 杜鹃兰（Cremastra appendiculata）, 结荚习性, 人工授粉技术, 结实率

Abstract: The dynamic observation of the pod habit after artificial pollination of Cremastra appendiculata was carried out, and the artificial high-efficiency pollination technology of C. appendiculata was explored and integrated. the results showed that under appropriate temperature and humidity, the flower tray began to expand significantly after 3 days of pollination, and the flower tray was enlarged after 20 days of flowering, the pods were shaped, and the fruit pods matured about 170 days after flowering. When the humidity is 60%~80%, the temperature is 25~28 ℃, and the opacity is 90%~95%, the pods of C. appendiculate grow faster and no diseases and pests occur. When the temperature exceeds 30 ℃, the growth of C. appendiculate pods is inhibited, and the growth is slow or stopped. When the temperature exceeds 33 ℃, some of the C. appendiculate pods withered and died, and diseases and pests occur. The average seed setting rate of artificial pollination was 60.75%, and that of natural pollination was 1.43%. And the seed setting rate of artificial pollination is much higher than that of natural pollination. Artificial pollination was carried out on the 1st to 7th day after flowering, respectively, the flowering days and the seed setting rate were approximately continuous and orthogonal. The seed setting rate of artificial pollination on the third day of flowering was 97.50%, and the seed setting rate began to decrease thereafter. There was a significant negative correlation between the number of flowers per plant and the seed setting rate of artificial pollination. That is, as the number of flowers per plant increases, the seed setting rate of artificial pollination decreases. In addition, the number of flowers per plant was negatively correlated with the seed setting rate of natural pollination. Combined with factors such as yield and cost, it is concluded that the optimal number of flowers left by artificial pollination per plant is 8~10.

Key words: Cremastra appendiculata, pod habit, artificial pollination technology, seed setting rate