施硫对苋菜生长及品质的影响  

Effect of Sulfur Fertilizer on Growth and Quality of Edible Amaranth

作　　者：张国芹[1] 牟建梅 徐瑶 李军[1] 何玲莉 佘旭东[1] 蒋明敏 

机构地区：[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

出　　处：《安徽农业科学》2017年第35期48-49,52,共3页Journal of Anhui Agricultural Sciences

基　　金：苏州市科技支撑项目(SNG201636;SYN201527)

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(S_2)时,株高最高,较不施硫处理(S_0)增加了14.3%。3个硫处理(S_1~S_3)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V_C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。[ 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 plan ts 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 /k g （S2） ,incerased by 14.3% compared with no sulfur fertilizer treatment （ S0 ） . S1-S3 of nitrate content was decreased by 20. 6% -6 4 . 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 

分 类 号：S636.4[农业科学—蔬菜学]