抗旱拌种剂对玉米幼苗生长及产量和籽粒品质的影响试验研究

采用盆栽试验和小区试验,分别研究了抗旱拌种剂对玉米幼苗生长、产量及籽粒品质的影响。盆栽试验结果表明,抗旱拌种剂能够促进玉米幼苗的根系发育,增加玉米幼苗鲜重和干物质重,提高叶绿素含量以及抗氧化酶SOD、POD和CAT活性,降低丙二醛含量,且在药种比为1∶14时效果最佳。小区试验结果表明,抗旱拌种剂能够使玉米水分含量、粗蛋白和赖氨酸含量分别提高0.40%、0.84%和0.03%,粗脂肪含量和粗淀粉含量分别降低0.13%和0.88%;使玉米穗长、穗粗、穗行数、行粒数、穗粒数、百粒重和产量分别较对照组增加1 cm、0.24 cm、0.7行、3.3粒、79粒、1.89 g和14.20%,秃尖较对照组短0.38 cm。由此可见,抗旱拌种剂能够促进玉米幼苗生长,改良玉米果穗性状及籽粒营养品质,提高玉米产量。

Study on effects of drought-resistant seed-dressing agent on seedling growth, yield and kernel quality of maize

A pot experiment and a plot experiment were adopted to investigate the effects of drought-resistant seed-dressing agent on seedling growth ,yield and kernel quality of maize ,respectively .The results of the pot experiment indi-cated that the drought-resistant seed-dressing agent could promote the root system development of maize seedling ,in-crease the fresh weight and dry weight ,improve the content of chlorophyll and the activity of antioxidase SOD ,POD and CAT of corn seedling ,and reduce the content of MDA of corn seedling .The best effect was achieved when the weight ra-tio between the agent and seed was 1∶14 .The results of the plot experiment indicated that the drought-resistant seed-dressing agent could increase the content of water ,coarse protein and lysine by 0 .40% ,0 .84% and 0 .03% ,respec-tively;decrease coarse fat and coarse starch by 0 .13% and 0 .88% , respectively;increase panicle length , panicle width ,panicle row number ,line grain number ,hundred-grain weight and yield by 1 cm ,0 .24 cm ,0 .7 lines ,3 .3 grains ,79 grains ,1 .89 g and 14 .20% ;and decrease barren tip by 0 .38 cm .In conclusion ,drought-resistant seed-dressing agent could promote seedling growth of maize ,improve panicle traits and kernel nutrient qualities of maize ,and increase maize yield .