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水稻是我区主要粮食作物。努力提高水稻产量具有重大的政治和经济意义。近年来,复种指数提高,氮、磷化肥用量占总用肥量中的比例日益增加,作物产量连续上升,土壤中钾素的平衡,出现了新的情况。进一步鉴定硫酸钾肥效,探明钾肥有效施用条件,是夺取粮食持续增产的重要施肥技术。文化大革命以来,在各级党委重视下,以贫下中农为主体的群众性科学实验蓬勃发展。1973年比较普遍地开展了硫酸钾对水稻的肥效及施用技术试验,
Rice is my main food crops. Efforts to increase rice production have major political and economic significance. In recent years, multiple cropping index increased, nitrogen and phosphorus fertilizer accounts for the proportion of the total amount of fertilizer increased, crop yields continued to rise, the soil potassium balance, a new situation. Further identification of fertilizer efficiency of potassium sulfate to identify the effective application of potassium conditions, is to seize the grain yield continued an important fertilization technology. Since the Cultural Revolution, under the supervision of Party committees at all levels, mass scientific experiments with the poor and under-peasants as the mainstay have been flourishing. In 1973, the tests of fertilizer efficiency and application of potassium sulfate to rice were carried out more generally.