How to manage betel nut trees so as not to drop flowers and fruits?

Betel nut is cultivated in India, Sri Lanka, Thailand, Malaysia and the Philippines. The trunk is unbranched, with a height of12 ~15m. Areca catechu is the seed of Areca catechu. Areca catechu leaves are the leaves of betel leaves of Piperaceae. Betel nut is slightly smaller than an egg, with fibrous skin and seeds, that is, betel nut. The endosperm is hard with gray-brown spots. From August to165438+1October, the fruit is harvested before it is fully ripe, peeled, cooked, sliced and dried in the sun, and it is dark brown or black after drying.