简介:摘要:苹果树作为重要的经济果树之一,常受到各种病虫害的侵袭,对果树生长和果实质量造成严重影响。本文从生物防治技术的角度出发,系统梳理了近年来针对苹果树主要病虫害的生物防治技术的进展与应用。介绍了传统农药防治的局限性,着重强调了生物防治技术的重要性与优势。详细分析了苹果树常见病虫害,如褐腐病、苹果蚜虫等,以及对应的生物防治措施,包括利用天敌、微生物制剂、植物提取物等手段进行病虫害防治的技术原理和应用效果。对未来苹果树病虫害生物防治技术的发展趋势进行展望,提出了加强生物防治技术研究与推广应用的建议,旨在为苹果树病虫害的防治提供科学依据与技术支持。
简介:前情提要:奶奶的朋友校长身负神秘使命,却在猝不及防中被夏蛋蛋当成甘蔗吃进了肚子里。奶奶为了救校长,用上了古老的妖术,把蛋蛋变成了一棵苹果树……如果苹果树也会流泪,一定早就流成河了。这还是我奶奶吗?这还是大熊吗?我不理解,他们怎么这么绝情?
简介:The love story between Ashurst and Megan is an old story. But it is beautifully described by John Galsworthy. He is a splendid writer. In this story,express their ideas through the portrayal of the characters in their works.[13] John Galsworthy insistes the idea that literature came from reality.[14] He is a realist. The Apple Tree was written in 1916. In this story Galsworthy tells us the beautiful sad story between Ashurst and Megan. Through the portrayal of Ashurst’s dual personality,. He looks the love tragedy between Ashurst and Megan as a mistake. In this novel we see no approvement and negation to Ashurst. What we see is Ashurst’s complicated character in the romantic realistic love story. From this we can easily understand Galsworthy’s class stand. In this novel
简介:he indulges himself in pity and chivalry. John Galsworthy had not smashed the trammels of the capitalist system. Through his portrayal of Ashurst’s personality,and to reveals the fact that John Galsworthy is a bourgeois himself by analyzing his portrayal of Ashurst’s dual personality.,Ashurst’s irresponsible attitude is clearly shown. He thought that the love with Megan was ugly
简介: 摘 要 我国是农业大国,农业产业在我国经济结构中扮演着十分重要的角色,而果树的栽培在种植业中占据着重要的地位。随着时代的发展,人们的生活水平逐渐上升,对于果品的要求也越来越高,面对人们的需求,我们需要改革创新果树栽培技术与提高栽培管理的科学措施,生产出更多高品质的水果以满足大众的需求。本文主要结合实际情况,对果树栽培的技术要点与栽培管理措施进行分析探讨。
简介:摘要:由于当前社会经济蓬勃发展,人民对生活水平也有了更高的需求。果树的健康成长,对水果的品质产生直接的影响,所以,对果树进行科学与水果营养治疗十分必要,并积极掌握先进的科学技术与营养治疗措施,给水果提供优越的成长环境,保证水果的品质与产量,进而增加水果的观赏性。将从水果园艺技术、水果园艺技术内容、果树营养治疗的技术三方面加以详尽的介绍,推动水果园艺技术和水果营养治疗科学技术地提高,适应社会大众的需要。