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水稻是我区主要粮食作物。努力提高水稻产量,具有重大的政治意义和经济意义。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问题。1973年我区比较普遍地开展了硫酸钾对水稻的肥效及施用技术试验,现将各地试验结果简介于下,供参考。
Rice is my main food crops. Efforts to increase rice production have great 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, potassium fertilizer to prove the effective application of conditions, is to seize the important issue of increasing food production. In 1973, our area has carried out the test of fertilizer efficiency and application technology of potassium sulfate to rice more generally. The test results of each place are summarized below for reference.