山西农业大学学报（自然科学版）2019，Vol.39Issue(2)：21-26,6.DOI:10.13842/j.cnki.issn1671-8151.201809047
膜间喷施乙草胺对张杂谷10 号生理特性及产量的影响
Effects of acetochlor application between plastic mulches in the filed on the physiological characteristics and yield of ZhangzaGu 10
摘要
Abstract
[Objective]Present study was designed to explore the impact of Acetochlor applied between plastic mulches at seedling stage of crops on the physiological characteristics and yield of ZhangzaGu 1 0 in the field.[Methods]The ZhangzaGu 1 0 was selected as research obj ects,and randomized complete block design (RCBD)was conducted.The fields were sowed on May 23,and Acetochlor at four different rates(2.25 L·hm-2 ,4.5 L·hm-2 ,6.75 L·hm-2 ,and 9 L·hm-2 )was sprayed on the field soil between plastic mulches on May 24.Tap water served as control treatment. POD and SOD activities,MDA content of crop leaves at seedling stage,weed prevention efficacy in 45 days of herbi-cide application,and crop yield were employed as major parameters to determine the influence of herbicide application on the crops.[Results]The results showed that SOD and POD activities of crop leaves were enhanced firstly and then decreased with the increase of the Acetochlor rates.Both POD and SOD activities at 9 L·hm-2 Acetochlor treatment were significantly higher than that of control (P<0.05 ),while the MDA content in all treatments was significantly greater than that of control group.Compared with control,there was no significant difference of each treatment with time increase.The efficacy of herbicide applied between plastic mulches was increased with the increase of application rate.In the 9 L·hm-2 Acetochlor treatment,percentage of weed prevention was reached up to 97.18%.The yield of crops in all treatments was increased with the increase of application rates firstly and then decreased with the highest yield obtained in 2.25 L·hm-2 Acetochlor treatment,which was 13.89% higher than that of control treatment (P< 0.05),No significant difference was observed between other yield components of each treatment and control group ex-cept ear weight,while in 6.7 5 L·hm-2 and 9 L·hm-2 Acetochlor treatments,yield was significantly decreased by 25.28% and 39.31 %,respectively,compared with control treatment (P<0.05).[Conclusion]Acetochlor application rate at 2.25 L·hm-2 was optimal for crop growth and development,and produced good weed inhibition activity and higher yield of crop.The mentioned rate can be recommended to be applied on the soil area between plastic mulches. The application of 6.75 L·hm-2 and 9 L·hm-2 Acetochlor produced a weed control of more than 94%,but the crop yield was reduced,therefore the caution should be used to apply the herbicide at these rates.关键词
膜间喷施/乙草胺/生理特性/产量/杂草防效Key words
Film spraying/Acetochlor/Physiological characteristics/Yield/Weed prevent and control effect分类
农业科技引用本文复制引用
赵夏童,刘韶光,宋喜娥,原向阳,董淑琦,郭美俊,宁娜,郭平毅..膜间喷施乙草胺对张杂谷10 号生理特性及产量的影响[J].山西农业大学学报（自然科学版）,2019,39(2):21-26,6.基金项目
山西省面上青年基金项目(201601D021099) （201601D021099）
