摘要
为探究不同施肥水平对玉树芫根营养品质的影响,本研究以该作物为试验材料进行田间试验,以不施肥为对照(CK),研究氮、磷、钾肥施肥量及复合肥配比对玉树芫根营养品质的影响.采用隶属函数、相关性分析对玉树芫根的可溶性糖、亚硝酸盐、可溶性蛋白质、维生素C和多糖含量进行评价.结果表明:每667 m2追施8 kg硫酸钾对提升可溶性糖含量效果最好,追施15 kg复合肥对提升多糖含量的效果最好,追施6 kg硫酸钾对提升可溶性蛋白质含量效果最好,追施4 kg硫酸钾对提高维生素C含量的效果最好,追施20 kg磷酸二铵对降低亚硝酸盐含量的效果最显著.在K6、K4、P15、N10和K8处理下,玉树芫根的营养品质均有提高.本研究可为后续玉树芫根高产、高品质种植提供数据参考.
Abstract
To investigate the effects of different fertilization levels on the nutritional quality of Yushu Brassica rapa L.,field experiments are conducted by taking the crop as the experimental materials,with no fertilization as the control(CK),so as to explore the effects of nitrogen,phosphorus,potassium fertilizer application rates and compound fertilizer ratios on its quality.The content of solu-ble sugar,nitrite,soluble protein,vitamin C and polysaccharide in Yushu Brassica rapa L.is evalua-ted by using membership function and correlation analysis.The results show that applying 8 kg of po-tassium sulfate per 667 m2 has the best effect on improving soluble sugar content,while 15 kg of compound fertilizer has the best effect on increasing polysaccharide content.The application of 6 kg potassium sulfate has the best effect on improving soluble protein content,while 4 kg potassium sul-fate has the best effect on increasing vitamin C content.Besides,20 kg diammonium phosphate has the most significant effect on reducing nitrite content.The nutritional quality of Yushu Brassica rapa L.is improved under the treatments of K6,K4,P15,N10 and K8.The study can provide data refe-rence for high-yield and high-quality cultivation of Yushu Brassica rapa L.in the future.
基金项目
青海省科学技术厅项目(2021-NK-124)
国家自然科学基金(32260778)
青海省"高端创新人才千人计划"项目(K9923197)
NETL
NSTL
万方数据