我国是一个农作物品种和种质资源十分丰富的国家,世界上栽培的近1200种植物,有200余种起源于中国。但是长期以来,由于多种原因,许多十分珍贵的农作物种类和品种资源,尚未得到有效的保护和开发利用,其中一部分品种资源已经濒临绝迹,直接制约和影响了我国农业尤其是名特优农产品的生产和出口创汇 China is a country rich in crop varieties and germplasm resources. There are nearly 1,200 species of plants cultivated in the world and more than 200 species originated in China. However, for many reasons, many precious crop types and varieties have not been effectively protected and utilized. Some of them have come to the verge of extinction and directly affect and restrict the development of China’s agriculture, especially that of famous and excellent agricultural products Production and export earnings