vince, was conducted to preliminarily grasp the main species, occurrence regularity and spatial
distribution of Moringa spp. plantations. The results showed that the main pest species of Moringa spp. plantation
include Prodenia litura, Plutella xylostella, Batocera rufomaculata, Frankliniella intonsa, Haplothrips aculeatus,
Spodoptera litur and Toxoptera aurantii. The damage degree of Prodenia litura and Plutella xylostella has
reached a serious level of harm, while the flower Frankliniella intonsa, Haplothrips aculeatus and Toxoptera
aurantii have reached a moderate level of harm, Spodoptera litura and Batocera rufomaculata is mild. The peak
time of the main pest larvae is September, the larval population is almost harmless from January to March, and the
larval population has lower insect density in other months. The spatial distribution of larvae of Prodenia litura,
Plutella xylostella, Frankliniella intonsa, Haplothrips aculeatus, Spodoptera litur and Toxoptera aurantii was
evenly distributed, while the larvae of Batocera rufomaculata wwas clustered. The reason for the aggregation was
that the external environmental factors in the forest and their biological characteristics interacted with each other.
|