荔枝授粉素是华南农业大学园艺系研制的能促进荔枝花粉管伸长、加速授精作用、提高座果率的新药物,已于1991年夏通过广东省科委主持的鉴定,技术水平属国内首创。在花期阴雨或气候不良条件下使用效果更加显著。据室内试验应用,荔枝花粉管伸长的速度比对照快1—3.6倍;在全省多点多年田间试验对荔枝三月红、黑 Litchi pollination is a new drug developed by Department of Horticulture, South China Agricultural University, which can promote the elongation of pollen tube of litchi, accelerate the insemination, and increase the fruit set rate. It was appraised by Guangdong Science and Technology Commission in the summer of 1991, and its technical level is the first in China . In florescence or poor weather conditions the use of more significant effect. According to indoor test application, litchi pollen tube elongation faster than the control 1-3.6 times; in the province for many years field trials of lychee March red, black