基于多效唑和微喷灌量的麦茬复播谷子品质及矮化效应研究  

Effect of Paclobutrazol and Micro Sprinkler Irrigation on the Quality and Dwarfing of Millet Cultivated on Wheat Stubble

作　　者：靖华 马爱平 亢秀丽[1,2] 王裕智 崔欢虎 黄学芳 JING Hua;MA Aiping;KANG Xiuli;WANG Yuzhi;CUI Huanhu;HUANG Xuefang(Wheat Research Institute of Shanxi Agricultural University,Linfen,Shanxi 041000;State Key Laboratory of Sustainable Dryland Agriculture(in preparation),Shanxi Agricultural University,Taiyuan 030031;Organic Dry Farming Research Institute,Shanxi Agricultural University,Taiyuan 030031)

机构地区：[1]山西农业大学小麦研究所,山西临汾041000 [2]山西农业大学省部共建有机旱作农业国家重点实验室(筹),太原030031 [3]山西农业大学山西有机旱作农业研究院,太原030031

出　　处：《中国农学通报》2023年第6期18-25,共8页Chinese Agricultural Science Bulletin

基　　金：山西农业大学省部共建有机旱作农业国家重点实验室自主研发项目(202001-6);国家重点研发计划项目(2021YFD1901102-4);山西农业大学特优农业高质量发展科技支撑工程项目(TYGC-20);国家农业环境尧都实验站(NAES-AE-016)。

摘　　要：为有效提升麦茬复播谷子品质及防倒技术,2017—2019年在山西临汾采用裂区、随机区组方法分别开展了多效唑(PP333)不同叶龄期的不同喷施浓度、不同生育期微喷灌量对麦茬复播谷子品质及矮化的影响研究。结果表明,不同叶龄期喷施不同浓度PP333、不同生育期微喷灌量对麦茬复播谷子蛋白质及其3类氨基酸、脂肪、淀粉、纤维品质性状的影响均存在极显著差异(P<0.01)。其中PP333在8叶期以1.2%浓度喷施可显著提高蛋白质含量、8种必需氨基酸、4种半必需氨基酸、3种非必需氨基酸平均含量;除色氨酸性状外,蛋白质及其他14种氨基酸含量在0.8%~1.2%浓度范围喷施PP333均优于清水喷施(对照);4叶期以1.0%、0.8%浓度喷施PP333分别有利于脂肪、淀粉含量的提高。随微喷灌水量的增加蛋白质含量及其8种必需氨基酸、4种半必需氨基酸、3种非必需氨基酸平均含量基本呈现下降趋势,除半胱氨酸、色氨酸性状外,蛋白质、3类氨基酸平均含量及其13种氨基酸含量、脂肪含量均以生育期微喷灌量0.0 mm(拔节期0.0 mm+孕穗期0.0 mm)处理最高,且与其他3个微喷灌量处理(拔节期37.5 mm、孕穗期37.5 mm、拔节期37.5 mm+孕穗期37.5 mm)间存在极显著差异(P<0.01)。6叶期以1.0%~1.2%浓度喷施PP333、关键生育期减少微喷灌量均有较好的矮化效应。该项研究可为提升麦茬复播谷子品质及矮化防倒提供理论与技术支撑。In order to effectively improve the quality and lodging resistance of millet cultivated on wheat stubble,the effects of different spraying concentrations of paclobutrazol(PP333)at different leaf ages and sprinkler irrigation quantities at different growth stages on the quality and dwarfing of millet cultivated on wheat stubble were studied by the methods of split plot and random block in 2017-2019 in Linfen of Shanxi Province.The results showed that the effects of the treatments on protein and its three kinds of amino acids,fat,starch and fiber quality of millet cultivated on wheat stubble were significantly different(P<0.01).The protein content and the average content of 8 essential amino acids,4 semi-essential amino acids and 3 non essential amino acids were significantly increased by spraying PP333at the concentration of 1.2%at the 8-leaf stage.By spraying PP333at the concentration of 0.8%-1.2%,except tryptophan acid,the contents of protein and other 14amino acids were better than that by spraying clear water(CK).Spraying PP333at the concentration of 1%and0.8%at 4-leaf stage was beneficial to improving the content of fat and starch.With the increase of micro sprinkler irrigation quantity,the content of protein and the average content of 8 essential amino acids,4 semiessential amino acids and 3 non essential amino acids basically showed a downward trend.With treatment of micro sprinkler irrigation 0.0 mm(jointing stage 0.0 mm+booting stage 0.0 mm),except cysteine and tryptophan acids,the average content of protein and 3 kinds of amino acids,and the content of 13 amino acids and fat were the highest,and there was significant difference(P<0.01)with the other 3 treatments of sprinkler irrigation quantities(jointing stage 37.5 mm,booting stage 37.5 mm,jointing stage 37.5 mm+booting stage 37.5mm).Spraying PP333at the concentration of 1.0%-1.2%at 6-leaf stage and decreasing micro sprinkler irrigation quantity in the critical growth stage could have better dwarfing effects.This study can provide theoretical and techni

关 键 词：麦茬谷子 复播 品质性状 PP333 矮化效应 

分 类 号：S312[农业科学—作物栽培与耕作技术]