摘要
以京科糯2000(JKN2000)和苏玉糯5号(SYN5)为材料,大田条件下设正常施肥水平(N)和正常施肥下增施硫肥(N+S)两个处理,研究增施硫肥对成熟期糯玉米产量和品质的影响。结果表明,增施硫肥显著提高JKN2000(15.0%)和SYN5(19.1%)的子粒产量(P<0.01)。与N处理相比,N+S处理下JKN2000干物质、氮素和硫素积累量分别增加9.1%、33.6%和31.5%,SYN5分别增加11.7%、29.8%和41.1%。增施硫肥处理下JKN2000和SYN5的氮收获指数分别提高3.2%和3.7%(P<0.05),氮肥偏生产力提高14.9%和19.4%(P<0.01)。增施硫肥显著提高JKN2000淀粉的峰值黏度和崩解值,SYN5的糊化特征值均有所降低。增施硫肥处理下SYN5和JKN2000淀粉的回生热焓值分别降低9.2%和30.2%(P<0.01),回生值降低1.8%和7.1%(P<0.01)。研究表明,适当增施硫肥不仅能提高糯玉米子粒产量和氮肥利用率,而且能有效调优糯玉米糊化特性和热力学特性。
In this field experiment,Jingkenuo2000(JKN2000)and Suyunuo 5(SYN5)were used as materials,and two fertilization treatments of normal fertilization level(N)and normal fertilization level with sulfur fertilizer(N+S)were set up to examine the effects of adding sulfur fertilizer on the yield and quality of waxy maize.The results showed that grain yield of JKN2000 and SYN5 increased by 15%and 19.1%(P<0.01)under(N+S)treatment.Com⁃pared with N treatment,the dry matter accumulation,nitrogen and sulfur accumulation of JKN2000 significantly in⁃creased by 9.1%,33.6%and 31.5%under(N+S)treatment,and increased by 11.7%,29.8%and 41.1%in SYN5.Nitrogen harvest index of JKN2000 and SYN5 increased by 3.2%and 3.7%(P<0.05)under(N+S)treatment,and ni⁃trogen partial factor productivity increased by 14.9%and 19.4%(P<0.01).Sulfur fertilizer application significantly increased the starch peak viscosity and breakdown of JKN2000,while the pasting characteristic values of SYN5 de⁃creased.The starch retrogradation enthalpy of JKN2000 and SYN5 decreased by 9.2%and 30.2%(P<0.01)under(N+S)treatment,and retrogradation percentage decreased by 1.8%and 7.1%(P<0.01),respectively.The results showed that sulfur fertilizer application not only increase the grain yield and nitrogen utilization efficiency of waxy maize,but also effectively optimize the pasting and thermodynamic characteristics.
作者
蒋晨炀
梁毓文
李薇
王玉茹
郭剑
陆大雷
李广浩
JIANG Chen-yang;LIANG Yu-wen;LI Wei;WANG Yu-ru;GUO Jian;LU Da-lei;LI Guang-hao(College of Agriculture,Yangzhou University/Jiangsu Key Laboratory of Crop Genetics and Physiology/Jiangsu Key Laboratory of Crop Cultivation and Physiology/Co-Innovation Center for Modern Production Technology of Grain Crops,Yangzhou 225009,China)
出处
《玉米科学》
北大核心
2025年第4期81-89,共9页
Journal of Maize Sciences
基金
江苏省农业科技自主创新资金项目(CX[23]3117)
国家自然科学基金项目(32101828)
江苏现代农业产业技术体系项目(JATS[2023]454)
江苏高校优势学科建设工程项目。
关键词
糯玉米
增施硫肥
产量
糊化特性
热力学特性
Waxy maize
Adding sulfur fertilizer
Yield
Pasting property
Thermal property
作者简介
蒋晨炀(2000-),男,江苏镇江人,硕士,主要从事玉米栽培生理研究。;通信作者:李广浩。E-mail:guanghaoli@yzu.edu.cn。
