一、引言在毛主席革命路线指引下,我国农业生产连年获得丰收。全国普及大寨县的运动正在掀起,群众性科学实验活动蓬勃发展,以贫下中农为主体的三结合科学队伍迅速壮大,县、社、大队、生产队四级农业科学实验网逐步形成。在这种大好形势下,为了加速农业和科学现代化的步伐,为了摸清农作物高产、更高产的内在规律,给出科学数据,给指挥生产提供科学依据,以达到更大幅度的增产,就越来越迫切地感到需要提供能为农、林、气象等部门进行科学研究的新型仪 I. INTRODUCTION Under the guidance of Chairman Mao’s revolutionary line, China’s agricultural production has enjoyed a bumper harvest year after year. The campaign to popularize Dazhai County across the country is starting to take off. The popularization of scientific experiments in mass activities has rapidly developed. The three-pronged scientific team with the poor and under-middle peasants as the mainstay has been rapidly expanding. The agricultural science experiment network of county, community, brigade and production team has gradually taken shape. In such a favorable situation, in order to speed up the pace of agricultural and scientific modernization, in order to find out the inherent law of high-yield crops and high-yield crops, provide scientific data and provide scientific basis for directing production so as to achieve more substantial increases in production. The more urgent it is to feel the need to provide a new type of instrument that can conduct scientific research in agriculture, forestry and meteorology departments