Abstract:

In vegetable cultivation, using appropriate plant growth regulators to flower and fruit retention is an important step. Currently, there are many kinds of plant growth regulators available on sale. To better guide farmers in selecting and using plant growth regulators correctly and effectively in production, this study conducted fruit setting experiments on Cucurbita maxima D. using four common plant growth regulators: Xihulu Gaoxiaozuoguowang, Youlisu, Shuirongxingfangluosu, and Nangua zuoguoling. The fruit setting rate, single melon horizontal diameter, single melon vertical diameter, single melon weight, and yield data during the harvesting of tender melons indicated that the Xihulu Gaoxiaozuoguowang had the best effect on flower and fruit retention and yield increase of different varieties of Cucurbita maxima D., which provided an important guidance for farmers in the selection of plant growth regulators in actual production practice.

Key words: Cucurbita maxima D., plant growth regulators, fruit setting rate