氮钾配施对中苎2号植株鲜重及原麻产量的影响

Effects of Combined Application of Nitrogen and Potassium on Plant Fresh Weight and Raw Fiber Yield of Ramie Variety Zhongzhu No.2

以苎麻品种中苎2号为材料,采用二次通用旋转组合设计,研究了氮钾配施对苎麻植株鲜重及原麻产量的影响。结果表明:苎麻植株鲜重和原麻产量大小均为头麻>三麻>二麻;苎麻植株原麻干重与植株鲜重比为二麻>三麻>头麻;植株鲜重和原麻产量之间存在极显著的回归关系。运用DPSv7.05软件分析得出"中苎2号"植株鲜重的最优氮钾配比为:N 20 kg/667m2,K20 27.071kg/667m2;原麻产量的最优氮钾配比为:N 17.92 kg/667m2,K20 27.071 kg/667m2。

The quadratic general rotation unitized design was used to study effects of combined application of nitrogen and potassium on plant fresh weight(PFW) and raw fiber yield(RFY) of ramie variety Zhongzhu NO.2.The results showed that the order of PFW in one year was the same as RFY: first harvest>third harvest> second harvest;the order of ratio of RFY to PFW was second harvest>third harvest>first harvest.There were significant regression relation between PFW and RFY.The analyzing results of software DPSv7.05 indicated that the optimal combination of nitrogen and potassium for PFW was 300 kg/hm2 of N and 406.065 kg/hm2of K2O;the optimal combination of nitrogen and potassium for RFY was 268.8 kg/hm2 of N and 406.065 kg/hm2 of K2O.