不同氮素处理下玉米种子活力及耐储性评价  

Evaluation of Maize Seed Vigor and Storability under Different Nitrogen Treatments

作　　者：郝楠[1] 李月明[1] 王成[1] 何宏晔 HAO Nan;LI Yue-ming;WANG Cheng;HE Hong-ye(Maize Institute of Liaoning Academy of Agricultural Sciences,Shenyang,Liaoning 110161;Fushun Agricultural Specialty School,Fushun,Liaoning 113123)

机构地区：[1]辽宁省农业科学院玉米研究所/农业农村部东北主要作物遗传育种重点实验室,辽宁沈阳110161 [2]抚顺市农业特产学校,辽宁抚顺113123

出　　处：《辽宁农业科学》2020年第1期49-53,共5页Liaoning Agricultural Sciences

基　　金：国家重点研发计划项目(2018YFD01009)

摘　　要：以玉米品种郑单958(郑58×昌7-2)、辽单565(中106×辽3162)、辽单588(辽8821×S121)、先玉335(Ph6wc×Ph4cv)为试验材料进行杂交制种,以各品种母本追施不同氮素处理为变量,测定当年收获种子与低温贮藏2年后的种子标准发芽率、人工加速老化、发芽指数、活力指数等种子质量相关指标,评价不同氮素处理对玉米种子的种子活力及耐贮性的影响。结果表明:不同氮素水平对当年收获各品种种子活力无显著影响,但对种子的耐储性有一定影响。因此,在玉米制种过程中,即要做到氮素的有效利用又要获得活力较高、耐储性较好的种子的母本施氮量为150~225 kg/hm 2。另外,由于不同品种需氮规律不同,制种田施氮量应根据品种与地利因地制宜的制定。A maize production experiment was carried out with the maize hybrids Zhengdan958(Zheng58/Cang7-2),Liaodan565(Zhong106/Liao3162),Liaodan588(liao8821×S121)and Xianyu335(Ph6wc/Ph4cv)under differert nitrogen treatments to compared the seed vigor indexes between the harvest year and low temperature storage for two years.We measure the standard germination tests、accelerated aging germination、germination index and vitality index to evaluate the changes of seed vigor of maize under different nitrogen fertilizer treatments.The result indicated that different nitrogen levels had no significant effect on seed vigor but had some effect on storability.Therefore,150~225 kg/hm 2 of nitrogen fertilizer can effectively utilize nitrogen and obtain seeds with high vigor and good storability.

关 键 词：种子活力 耐贮性 氮素 

分 类 号：S513.01[农业科学—作物学]