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1988年在长江中下游麻区五种土壤上,采用田间试验方法,研究苎麻施用氮磷钾肥不同用量与配比的影响。试验结果表明,不同氮磷钾肥用量与配比对苎麻生长发育、养分吸收和产、质量影响不同,在不同土壤上也不相同。根据对产量和质量提高的综合效果,在有机质含量高,氮磷中等,钾较低的红黄壤上,以N_2P_2K_3和N_3P_2K_2配方施肥效果最好;在有机质含量中等、钾中等、氮磷较高的红砂壤土上,以N_2P_2K_2和N_2P_1K_3配施效果好;在有机质、氮、磷均低,钾中等的黄土上,以N_2P_2K_3和N_2K_2配施效果较好;在养分含量均低的冲积土和含钾较高、有机质中等、氮磷低的扁砂土上,均以N_3P_2K_2和N_2P_2K_2配施效果好。
In 1988, on the five kinds of soils in the middle and lower reaches of the Yangtze River, field experiments were conducted to study the effects of different amounts and proportions of NPK fertilizers applied to ramie. The results showed that different amounts of nitrogen, phosphorus and potassium fertilizers and ramification had different effects on growth, nutrient absorption, yield and quality of ramie, and were different in different soils. According to the comprehensive effect on the yield and quality, N_2P_2K_3 and N_3P_2K_2 were the best fertilizers on the red and yellow soil with high organic matter content, moderate nitrogen and phosphorus, and low potassium fertilizer. In medium organic matter, medium potassium and high nitrogen and phosphorus In the red sandy loam soil, N_2P_2K_2 and N_2P_1K_3 were better, and the N_2P_2K_3 and N_2K_2 were the best in loess with low contents of organic matter, nitrogen and phosphorus and medium potassium. In alluvial soil with low contents of nutrients and potassium Higher N3P_2K_2 and N_2P_2K_2 had the better effect on medium and low N and P flat sand soil.