一九五六年六——七月作者参加中国科学院西北分院与甘肃省人民委员会共同主持的河西农业考察团农艺组的工作。在甘肃省河西的敦煌、安西两县具有代表性地区的农业生产合作社中,先后工作了三十余日。现在仅就调查期间所搜集到的一些关于轮作和土壤耕作方面的材料、发现的一些问题以及个人对这些问题的一些不成熟的见解写成本文,请大家予以批评和指导。 June-July 1956 The author participated in the work of the agrochemical group of the Hexi agricultural research group co-chaired by the Northwest Branch of the Chinese Academy of Sciences and the Gansu Provincial People’s Committee. Among the agricultural cooperatives in the representative areas of Dunhuang and Anxi counties in Hexi, Gansu Province, they have successively worked for more than 30 days. Let us now criticize and guide you only on some of the materials collected during the investigation on crop rotation and soil cultivation, some of the problems discovered and some immature opinions of individuals on these issues.