[关键词]
[摘要]
在陇东黄土高原区进行了紫苏“3414”肥效试验，结果表明，该地区土壤中有效养分含量表现为高K、中P、中N，N是限制产量的主要因子，N、P、K三要素对产量的效应由大到小为N、P、K。紫苏最大施肥量为N 249.45 kg/hm2、P2O5 131.10 kg/hm2、K2O 39.30 kg/hm2，N、P、K比例为1 ∶ 0.52 ∶ 0.15，该水平下紫苏产量为 1 892.55 kg/hm2；最佳施肥量为N 193.05 kg/hm2、P2O5 117.90 kg/hm2、K2O 30.00 kg/hm2，N、P、K比例为 1 ∶ 0.61 ∶ 0.15，该水平下紫苏产量为1 759.65 kg/hm2。
[Key word]
[Abstract]
The“3414” fertilizer efficiency experiment of perilla was conducted in loess plateau of eastern Gansu province . The results showed that the soil in this area has abundant available K， medium available P and available N； N is the main factors that limit perilla yields， the effect of increase production is N、P、K . Maximum rate of fertilization is N 249.45 kg/hm2， P2O5 131.10 kg/hm2， K2O 39.30 kg/hm2， the ratio of N ∶ P ∶ K is 1 ∶ 0.52 ∶ 0.15， the yield of perilla is 1 892.55 kg/hm2， optimum fertilization is N 193.05 kg/hm2， P2O5 117.90 kg/hm2， K2O 30.00 kg/hm2， the ratio of N∶ P∶ K is 1∶ 0.61∶ 0.15 in this level， in this condition perilla yield is 1 759.65 kg/hm2 .
[中图分类号]
S565.8
[基金项目]
甘肃省教育厅研究生导师项目(121002)；甘肃省农业生物技术研究与应用开发项目(GNSW-2012-06)部分内容
