不同盖土厚度对机插水稻秧苗生长特性的影响  

Effect of Different Soil Cover Thicknesses on Growth Characteristics of Machine-Transplanted Rice Seedlings

作　　者：吴翠 刘文祥 曾琴 杨鹰 李永强 邹映 易军辉 王悦[1] WU Cui;LIU Wen-xiang;ZENG Qin;YANG Ying;LI Yong-qiang;ZOU Ying;YI Jun-hui;WANG Yue(College of Agronomy,Hunan Agricultural University,Changsha 410125,PRC;Hunan Institute of Agricultural Information and Engineering,Changsha 410125,PRC;Xiangxiang City Bureau of Agriculture and Rural Affairs,Xiangtan 411499,PRC;Yueshan Town Agricultural Comprehensive Service Center of Xiangxiang City,Xiangxiang 411431,PRC)

机构地区：[1]湖南农业大学农学院,湖南长沙410125 [2]湖南省农业信息与工程研究所,湖南长沙410125 [3]湘乡市农业农村局,湖南湘潭411499 [4]湘乡市月山镇农业综合服务中心,湖南湘乡411431

出　　处：《湖南农业科学》2024年第10期13-16,共4页Hunan Agricultural Sciences

基　　金：国家重点研发计划项目(2023YFD2301404);中国烟草总公司湖南省公司科技重点项目(HN2023KJ03)。

摘　　要：为明确水稻机插育秧盖土厚度对秧苗生长的影响,以中早39为试验材料,设置3种盖厚土处理,分别为盖土0 cm(CK)、盖土0.5 cm(T1)和盖土1 cm(T2),测定机插秧苗出苗率、苗高、根长、叶龄、绿叶数、根系总根长、总投影面积、根表面积和根体积等指标。结果表明:T1处理的出苗率相比CK处理显著提高了68.6%,但与T2处理无显著性差异。T1处理的苗高、总根数和叶鲜重相比CK分别显著增加95.4%、80.6%和66.7%。T1处理的苗高、叶龄、总根数和叶鲜重相比T2分别显著增加80.2%、40%、7.7%和25%。综上所述,盖土0.5 cm能有效提高水稻机插秧育苗特性。In order to clarify the effect of the soil cover thickness on the growth of machine-transplanted rice seedlings,Zhongzao 39 was used as the experimental material,and three kinds of thick soil cover treatments were set up,which were 0 cm(CK),0.5 cm(T1),and 1 cm(T2).The emergence rate,height,root length,leaf age,green leaf number,total root length,total projection area,root surface area,root volume,and other indicators of the machine-transplanted rice seedlings were measured.The results show that the emergence rate of T1 treatment is significantly increased by 68.6%compared with that of CK treatment,but there is no significant difference with T2 treatment.The seedling height,total root number,and aboveground fresh weight of T1 treatment are significantly increased by 95.4%,80.6%,and 66.7%,respectively,compared with those of CK treatment.The seedling height,leaf age,total root number,and aboveground fresh weight of the T1 treatment are significantly increased by 80.2%,40%,7.7%,and 25%,respectively,compared with the T2 treatment.In summary,a soil cover of 0.5 cm can effectively improve the growth characteristics of machine-transplanted rice seedlings.

关 键 词：水稻秧苗 盖土厚度 出苗率 秧苗素质 根系形态 

分 类 号：S511[农业科学—作物学]