施硫对苋菜生长及品质的影响
Effect of Sulfur Fertilizer on Growth and Quality of Edible Amaranth
张国芹 1牟建梅 1徐瑶 2李军 1何玲莉 1佘旭东 1蒋明敏1
作者信息
- 1. 江苏省太湖地区农科所,江苏苏州215155
- 2. 江苏省种子管理站,江苏南京210036
- 折叠
摘要
[目的]确定降低苋菜硝酸盐累积效果最佳的施硫浓度,为完善苋菜科学施硫技术提供指导.[方法]采用盆栽方法,设置4个施硫肥水平,测定其对植株生长及硝酸盐、Vc含量的影响.[结果]施硫提高了苋菜的株高、单株重、最大叶长及最大叶宽.当硫浓度为20 mg/kg(S2)时,株高最高,较不施硫处理(S0)增加了14.3%.3个硫处理(S1~S3)硝酸盐含量降幅为20.6%~64.7%.施硫浓度为10 mg/kg时植株可食部分硝酸盐含量降低了64.7%.施硫处理苋菜VC含量增加了19.7%~28.3%.[结论]大田苋菜适宜的施硫浓度为10~20 mg/kg.
Abstract
[Objective] The optimal sulfur concentration for reducing nitrate accumulation content in edible amaranth was assured to provide guide for sulfur application. [Method] 4 sulfur level was set, pot test was carried out to determine plants′s growth,nitrate,Vc content. [Re-sult] Plant height,weight per plant,maximum leaf length and maximum leaf width were increased by applying sulfur fertilizer. The plant height was the highest when sulfur concentration was 20 mg/kg(S2),incerased by 14. 3% compared with no sulfur fertilizer treatment (S0). S1 ~S3 of nitrate content was decreased by 20. 6% -64. 7%. Nitrate content of plant in edible part was decreased by 64. 7% when sulfur concentra-tion was 10 mg/kg. VC content of sulfur treatment were increased by 19. 7% -28. 3%. [ Conclusion] Suitable sulfur concentration was 10-20 mg/kg for edible amaranth in field.
关键词
苋菜/硫肥/产量/品质Key words
Edible amaranth/Sulfur fertilizer/Yield/Quality引用本文复制引用
基金项目
苏州市科技支撑项目(SNG201636)
苏州市科技支撑项目(SYN201527)
出版年
2017
国家科技期刊平台
NSTL
维普
万方数据