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粤东粤北柑桔病虫草害调查及农药使用状况分析 被引量:10
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作者 罗义灿 章勇 +3 位作者 刘家莉 田发军 曾鑫年 钟广炎 《广东农业科学》 CAS 2018年第11期81-88,共8页
了解广东柑桔病虫草害发生及农药使用情况,给广东柑桔农药减施增效技术的合理制定奠定基础。采用定点调查法,调查了惠州、韶关、梅州市27个乡镇柑桔病虫草害的种类、分布及用药情况,明确农药使用的种类、各类农药在各地区的占比情况。... 了解广东柑桔病虫草害发生及农药使用情况,给广东柑桔农药减施增效技术的合理制定奠定基础。采用定点调查法,调查了惠州、韶关、梅州市27个乡镇柑桔病虫草害的种类、分布及用药情况,明确农药使用的种类、各类农药在各地区的占比情况。结果表明,主要发生的病害有柑桔炭疽病、柑桔溃疡病,主要虫害有柑桔木虱、红蜘蛛、柑桔潜叶蛾,主要草害有牛筋草、龙葵、狗尾草。使用的农药品种约有50种,各药剂种类的比例为25(杀虫剂)∶22(杀菌剂)∶4(除草剂),杀虫剂是当前果农使用种类和数量最多的一类农药。使用的杀虫剂中有机磷类>杀螨剂类>烟碱种类=拟除虫菊酯类>大环内酯类>季酮酸类=氨基甲酸酯类,其占比分别为28.0%、24.0%、14.2%、14.2%、8.0%、4.0%、4.0%;使用的杀菌剂中唑类杀菌剂>含铜杀菌剂>有机硫杀菌剂>取代苯类杀菌剂=复配杀菌剂>抗菌素类杀菌剂=其他杀菌剂,其占比分别为45.5%、22.7%、13.6%、9.1%、9.1%、4.5 %、4.5 %;除草剂主要使用草甘膦、草铵膦。在所调查的地区中,柑桔病虫草害方面没有发现新的病害、虫害及草害,在用药方面,各地区化学农药使用普遍不合理。 展开更多
关键词 柑桔病虫草害 农药种类 农药占比 减施措施 增效
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STUDY ON INDEX SYSTEM OF ASSESSMENT OF PUBLIC DISASTER PERCEPTION IN THE WESTERN CHINA 被引量:19
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作者 ZHOUOi LIJing-yi ZHAOJing-bo 《Chinese Geographical Science》 SCIE CSCD 2003年第3期284-288,共5页
The study on humanity response to global environment change is a new direction in the research of global change science, of which an important aspect is to study the adaptation strategies of human being to environment... The study on humanity response to global environment change is a new direction in the research of global change science, of which an important aspect is to study the adaptation strategies of human being to environmental changes in different regions. One reasonable and scientific adaptation strategy is based on not only scientific assessment of the impact of environmental change on society, but also correct estimation of the public perception of environmental change, whereas the research on the latter is terribly weak. This paper intends to understand the personality difference in public perception of environment in the western China primarily by establishing the assessment index system of nation environmental perception and analyzing the results of questionnaire survey in some regions of Shaanxi Province. The conclusions are as follows: 1) The state of public perception of disaster is one of the foundations of constituting and enforcing reasonable adaptation strategy to environmental change. 2) The personality differences of public perception of disaster appear as follows: female disaster perception is stronger than male;the order of disaster perception from strong to weak from the point of age characteristics is 20-30, 0-20, 40-50, 30-40, 50-60, 60 year old or over in turns; the order of disaster perception from strong to weak from the point of educational characteristics is senior high school, college, illiterate, junior high school, primary school, in turns; the order of disaster perception from strong to weak from the point of occupation characteristics is student, farmer, teacher, worker and functionary, in turns; the order of disaster perception from strong to weak from the point of habitat characteristics is city, countryside, towns, and metropolis in turns. 展开更多
关键词 global change disaster perception disaster reduction strategy western China
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