在毛主席无产阶级革命路线指引下,我们镇原县城关公社坚持自力更生,大力繁殖和推广杂交高粱。做到了繁殖、制种、示范推广相结合,初步出现了自成体系,品种配套,队队制种、全面推广的局面,促进了农业生产的发展。一九七二年推广杂交高粱一千二百六十三亩,配制杂交种四百七十五亩,繁殖不育系四十一亩,比七一年都有迅速扩大。今年在严重旱灾威胁面前,杂交高粱显示了比当地良种抗旱、抗病、高产的优点,深受贫下中农欢迎。预计今年可收杂交种五万二千多斤,不育系种子 Guided by Chairman Mao’s proletarian revolutionary line, we Chengzhen County Chengguan commune adhere to self-reliance, vigorously breeding and promoting hybrid sorghum. The combination of breeding, seed production and demonstration and promotion has been achieved. The situation of self-contained system, variety support, seed production and comprehensive promotion has appeared, which has promoted the development of agricultural production. In 1972, 12,600 hectares of hybrid sorghum were popularized, 475 hectares of hybrids were prepared, and 41 hectares of sterile male sterile lines were expanded, representing a rapid expansion over the previous year. This year in the face of a serious drought threat, hybrid sorghum shows the advantages than the local varieties of drought, disease resistance, high yield, welcomed by the poor and middle peasants. It is estimated that 52,000 kilos of crossbreds and CMS seeds will be harvested this year