复合抗旱剂配方筛选初步研究

Recipe Screening of Complex Drought Tolerance Agent

为了提高作物的抗旱能力和产量,进行了小麦复合抗旱剂配方筛选研究,以‘晋麦47号’小麦为材料,通过种子发芽势、发芽率、干物质、叶绿素荧光参数和产量等指标,对自研的16个配方制剂在干旱胁迫下进行了种子发芽、幼苗生长和抽穗期3个阶段的筛选。结果表明,Kh-13和Kh-1 2个配方效果较好,能促进种子萌发,利于苗齐苗壮,促进幼苗生长发育,增加干物质积累,提高个体质量,保持叶片相对含水率,促进光合作用,增强抗逆能力,在抽穗期前后喷施能促进幼穗发育,提高小麦穗粒数,增加产量。Kh-13和Kh-1处理的种子发芽势显著分别提高了2.00倍和1.66倍;发芽率显著分别提高了50%和50%;萌芽期抗旱性两者均达极强抗旱性标准;茎叶干物质显著分别增加了12.33%和11.42%;根干重显著分别增加了19.13%和13.00%;叶片相对含水率分别提高了23.53%和37.78%;穗粒数显著分别提高了22.36%和17.30%;产量显著分别增加了38.48%和20.78%。

In order to increase crop drought tolerance and crop yield, the author conducted screening of 16 complex drought tolerance agents in wheat basing on seed germination, young seedling and heading stages with indexes, such as seed germinating energy, germination percentage, dry matter weight, chlorophyllose fluorescent parameters and yield. The results showed that： Kh-13 and Kh-1 were better agents, they increased seed germination and dry matter weight, improved drought tolerance and photosynthesis, increased wheat yield. Compared with control, Kh-13 and Kh-1 increased seed germinating energy by 2.00 and 1.66 times, germination percentage by 50% and 50%, shoot weight increased by 12.33% and 11.42%, root weight increased by 19.13% and 13.0%, relative leaf water content improved 23.53% and 37.78%, grains/spike increased by 22.36% and 17.30%, yield increased by 38.48% and 20.78%, respectively.