浅埋滴灌条件下氮肥基追比对甜菜生长、产量和含糖率的影响  

Effects of Nitrogen Base Fertilizer and Topdressing Ratio on the Growth,Yield and Sugar Content of Sugar Beet under Shallow Buried Drip Irrigation

作　　者：李智 郭晓霞 黄春燕 菅彩媛 田露 韩康 任霄云 任惠敏 张鹏 刘佳 孔德娟 王珍珍 苏文斌 Li Zhi;Guo Xiaoxia;Huang Chunyan;Jian Caiyuan;Tian Lu;Han Kang;Ren Xiaoyun;Ren Huimin;Zhang Peng;Liu Jia;Kong Dejuan;Wang Zhenzhen;Su Wenbin(Special Crops Institute,Inner Mongolia Academy of Agriculture and Animal Husbandry Sciences,Hohhot 010031,Inner Mongolia,China;Ulanqab Institute of Agriculture and Forestry Science,Jining 012000,Inner Mongolia,China)

机构地区：[1]内蒙古自治区农牧业科学院特色作物研究所,内蒙古呼和浩特010031 [2]乌兰察布市农林科学研究所,内蒙古集宁012000

出　　处：《作物杂志》2024年第3期186-191,共6页Crops

基　　金：内蒙古农牧业青年创新基金(2021QNJJNO6);财政部和农业农村部:国家现代农业产业技术体系(CARS-170701);内蒙古自治区科技计划项目(2022YFDZ0065);内蒙古自治区草原英才创新团队(甜菜提质增效绿色栽培技术创新人才团队)。

摘　　要：于2021-2022年连续2年研究浅埋滴灌条件下不同氮肥基追比对甜菜叶片厚度、单位长度内的叶脉数量、株高、叶面积指数(LAI)、根冠比、单株干物质量、产量和含糖率的影响。结果表明,随氮肥追肥比例的增加,含糖率、叶片厚度和根冠比呈降低的趋势,而产量、产糖量、株高、叶面积指数和单株干物质积累量显著增加,N3处理(氮肥按基追比6:4)比CK处理(氮肥全部基施)产量提高6.93%~8.04%、产糖量提高6.12%~8.94%。相关性分析表明,甜菜产量与株高、LAI、单株干物质量呈显著正相关关系,而与叶片厚度呈显著负相关关系。因此,浅埋滴灌条件下,氮肥按基追比6:4有利于甜菜产量和产糖量的提高。The effects of nitrogen base fertilizer and topdressing ratio on leaf thickness,vein number per unit length,plant height,leaf area index(LAI),root-shoot ratio,dry matter accumulation per plant,yield and sugar content of sugar beet were investigated under shallow buried drip irrigation for two consecutive years from 2021 to 2022.The results showed that sugar content,leaf thickness and root-shoot ratio decreased with the nitrogen topdressing ratio increase,while yield,sugar yield,plant height,LAI and dry matter accumulation per plant of sugar beet increased significantly.The yield and sugar yield of N3 treatment(base fertilizer to topdressing 6:4 of nitrogen fertilizer)were increased by 6.93%-8.04%and 6.12%-8.94%,respectively compared with CK treatment.Correlation analysis showed that sugar beet yield was positively correlated with plant height,LAI and dry matter accumulation per plant,but negatively correlated with leaf thickness.Therefore,it is recommended that the ratio of base fertilizer to topdressing 6:4 of nitrogen fertilizer is beneficial to increase the yield and sugar yield of beet under shallow drip irrigation.

关 键 词：甜菜 浅埋滴灌 生长指标 产量 含糖率 

分 类 号：S566.3[农业科学—作物学]