摘要
为了明确丙酰芸苔素内酯对水稻生长、产量和品质的作用,秧苗期采用单因素完全随机设计,试验因素为0.003%丙酰芸苔素内酯水剂施用次数,设2个处理,处理A:喷施1次,处理B:喷施2次,设喷施清水空白对照(CK)。大田期采用单因素随机区组设计,试验因素为丙酰芸苔素内酯稀释倍数,设稀释1000倍液,2000倍液,3000倍液和4000倍液4个处理和一个喷施清水空白对照(CK)。秧苗期调查记录地上鲜重、地下鲜重,株高、根长和总根数,大田期调查记录水稻株高、有效穗数、每穗总粒数、结实率、千粒重和产量,并测定淀粉含量。结果表明,水稻秧苗期用0.003%丙酰芸苔素内酯水剂常规用量稀释2000倍液喷施1次,可显著提高秧苗素质,地上鲜重3.4 g,地下鲜重1.7 g,株高36.7 cm,根长16.3 cm,总根数50.7条;0.003%丙酰芸苔素内酯水剂常规用量稀释2000倍液或3000倍液在水稻移栽后5和12 d各喷施1次,对水稻提质增产效果明显。因此,0.003%丙酰芸苔素内酯水剂合理控制使用浓度和适期可以促进水稻生长发育。
In order to clarify the effects of propionyl brassinolide on the growth,yield,and quality of rice,a single factor fully randomized design was used at the seedling stage,with the experimental factor of 0.003%propionyl brassinolide water application frequency.Two treatments were set up,treatment A:spraying once,treatment B:spraying twice,and spraying water blank control(CK);A single factor randomized block design was used in the field stage.The experimental factors were dilution multiples of 0.003%propionyl brassinolide aqueous solution.Four treatments of 1000 times,2000 times,3000 times and 4000 times dilution and a blank control(CK)of spraying clean water were set up.During the seedling stage,fresh aboveground and underground weight,plant height,root length,and total root number were investigated and recorded.During the field stage,rice plant height,effective panicles,total grains per panicle,seed setting rate,1000 grain weight,and yield were investigated.The results showed that the quality of rice seedlings could be significantly improved by spraying with 2000 times dilution of 0.003%propionyl brassinolide water at seedling stage,the fresh weight above ground was 3.4 g,the fresh weight below ground was 1.7 g,the plant height was 36.7 cm,the root length was 16.3 cm,and the total root number was 50.7.The conventional dosage of 0.003%propionyl brassinolide water was diluted 2000 times or 3000 times and sprayed once at 5 and 12 days after rice transplantation,which had obvious effect on rice quality improvement and yield increase.Therefore,the rational control of the concentration and suitable period of 0.003%propionyl brassinolide can promote the growth and development of rice.
作者
李青超
王立达
赵秀梅
刘悦
兰英
刘洋
韩业辉
王连霞
LI Qingchao;WANG Lida;ZHAO Xiumei;LIU Yue;LAN Ying;LIU Yang;HAN Yehui;WANG Lianxia(Qiqihar Branch,Heilongjiang Academy of Agricultural Sciences,Qiqihar 161006,China)
出处
《黑龙江农业科学》
2023年第6期34-38,共5页
Heilongjiang Agricultural Sciences
基金
齐齐哈尔市科技局创新激励项目(CNYGG2022035)
中国科学院战略性先导科技专项(XDA28130504)。
关键词
水稻
丙酰芸苔素内酯
株高
千粒重
产量
品质
rice
propionyl brassinolide
plant height
1000-grain weight
yield
quality
