{"title":"火焰除草:燃烧器角度对除草控制和温度模式的影响","authors":"J. Ascard","doi":"10.1080/09064719809362505","DOIUrl":null,"url":null,"abstract":"The effects of flame burner angle on control of small weeds were studied in the field. An open burner was directed at five angles towards the ground: 45 and 67° aimed forwards and backwards, and 90° straight down. A burner angle of 67° directed backwards gave the highest weed reduction, but there were no significant differences between the effects of the different burner angles. Weed species with protected growing points were tolerant to flames, whereas species with sensitive leaves and exposed growing points were susceptible. Temperatures in the flame were measured 1 cm above the ground in a rail track in the laboratory with the same burner angles and speed that were used in the field. The temperature‐time curves were analysed for maximum temperatures as well as the period of time and temperature sum above certain temperatures. There were significant differences in temperature between different burner angles but no significant relationships between the different thermal parameters obtained in the laborat...","PeriodicalId":40817,"journal":{"name":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","volume":"22 1","pages":"248-254"},"PeriodicalIF":1.7000,"publicationDate":"1998-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"17","resultStr":"{\"title\":\"Flame weeding: Effects of burner angle on weed control and temperature patterns\",\"authors\":\"J. Ascard\",\"doi\":\"10.1080/09064719809362505\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"The effects of flame burner angle on control of small weeds were studied in the field. An open burner was directed at five angles towards the ground: 45 and 67° aimed forwards and backwards, and 90° straight down. A burner angle of 67° directed backwards gave the highest weed reduction, but there were no significant differences between the effects of the different burner angles. Weed species with protected growing points were tolerant to flames, whereas species with sensitive leaves and exposed growing points were susceptible. Temperatures in the flame were measured 1 cm above the ground in a rail track in the laboratory with the same burner angles and speed that were used in the field. The temperature‐time curves were analysed for maximum temperatures as well as the period of time and temperature sum above certain temperatures. There were significant differences in temperature between different burner angles but no significant relationships between the different thermal parameters obtained in the laborat...\",\"PeriodicalId\":40817,\"journal\":{\"name\":\"Acta Agriculturae Scandinavica Section B-Soil and Plant Science\",\"volume\":\"22 1\",\"pages\":\"248-254\"},\"PeriodicalIF\":1.7000,\"publicationDate\":\"1998-12-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"17\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Acta Agriculturae Scandinavica Section B-Soil and Plant Science\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://doi.org/10.1080/09064719809362505\",\"RegionNum\":4,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Acta Agriculturae Scandinavica Section B-Soil and Plant Science","FirstCategoryId":"97","ListUrlMain":"https://doi.org/10.1080/09064719809362505","RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"AGRONOMY","Score":null,"Total":0}
Flame weeding: Effects of burner angle on weed control and temperature patterns
The effects of flame burner angle on control of small weeds were studied in the field. An open burner was directed at five angles towards the ground: 45 and 67° aimed forwards and backwards, and 90° straight down. A burner angle of 67° directed backwards gave the highest weed reduction, but there were no significant differences between the effects of the different burner angles. Weed species with protected growing points were tolerant to flames, whereas species with sensitive leaves and exposed growing points were susceptible. Temperatures in the flame were measured 1 cm above the ground in a rail track in the laboratory with the same burner angles and speed that were used in the field. The temperature‐time curves were analysed for maximum temperatures as well as the period of time and temperature sum above certain temperatures. There were significant differences in temperature between different burner angles but no significant relationships between the different thermal parameters obtained in the laborat...
期刊介绍:
Acta Agriculturæ Scandinavica Section B publishes original research in applied soil and plant science with special attention given to to crop production in agri- and horticultural systems. We welcome manuscripts dealing with:
Climate smart and sustainable crop production systems
Water and nutrient efficiency
Soil conservation and productivity
Precise agriculture systems
Applications of bio- and nanotechnology
Digitalisation and robotics
Soil-plant interactions
Acta Agriculturæ Scandinavica, Section B – Soil & Plant Science forms part of a series of titles published on behalf of the Nordic Association of Agricultural Science (NJF). The series also includes Section A - Animal Science .