河南邓县种子公司关书堂经管的2000多亩棉花良种基地,誉传鄂豫两省,销往南阳、襄樊两市和南阳、唐河、谷城、新野和邓县五县。1980年以来,每年以20～25万斤的优质棉种供棉花大田种植,增产效果显著,受到广大棉农的欢迎,人们称关书堂叫关“三关”。 Henan Dengxian Seed Company Guan Shuitang administered 2000 acres of cotton seed base, reputation in Hubei and Henan provinces, sold to Nanyang, Xiangfan two cities and Nanyang, Tanghe, Gucheng, Xinye and Dengxian five counties. Since 1980, 20-25 kilograms of high-quality cotton seedlings have been planted in cotton fields for cotton production. The yield-increasing effect has been remarkable. It is welcomed by the vast number of cotton farmers. People call it the “three customs clearance.”