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我县属江苏宁镇扬丘陵区,土壤肥力水平低,在水稻生产上历来以单质氮肥碳铵作基肥,按照平衡施肥的理论就我县土壤而言,磷素基本能满足水稻生长需要,而土壤钾素不足。为此,我们于1990-1992年开展了氮钾颗粒肥多点试验和示范工作。氮钾肥用碳
My county is Jiangsu Yang Zhen Yang Hilly, soil fertility is low, in the rice production has always been to single-factor nitrogen ammonium bicarbonate as a base fertilizer, according to the theory of balanced fertilization in my county soil, phosphorus can basically meet the needs of rice growth, and Soil potassium deficiency. To this end, we carried out in 1990-1992 nitrogen and potassium fertilizer multi-point test and demonstration. Nitrogen and potassium fertilizer carbon