毛竹枯梢原因及其发生规律研究

来源 :科技简报 | 被引量 : 0次 | 上传用户:wdyyy
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
毛竹枯梢为浙江省当前威胁毛竹生产的重大问题。凡受害的竹林,轻者个别枝条或部分竹梢枯死;重者整株新竹死亡。不仅影响当年毛竹产量,同时威胁着竹林生存。过去在沿海毛竹产区有大面积为害,近几年在内地许多重点毛竹产区也为害严重。1972年据省农林局就嘉兴、宁波、杭州三地区不完全统计,发病面积18万余亩(习惯亩),发病新竹1000余万株。其中死亡新竹达225万余株。此外台州、绍兴、金华、丽水等地也有不同程度的新竹死亡。 Bamboo shoots are currently threatening the major issue of bamboo production in Zhejiang Province. Where the victims of bamboo, light individual branches or part of the wilt died; heavy whole plant Hsinchu death. Bamboo production not only affects the year, at the same time threatening the survival of bamboo forest. In the past, there was a large area of ​​damage in the areas along the coast with the production of bamboos. In recent years, many key bamboo producing areas in the Mainland have also been seriously devastated. In 1972, according to incomplete statistics of Jiaxing, Ningbo and Hangzhou, the provincial Agriculture and Forestry Bureau made an epidemic area of ​​more than 180,000 mu (habitual acreage) and more than 1,000,000 strains of Hsinchu. Among them, more than 2.25 million strains were killed in Hsinchu City. In addition Taizhou, Shaoxing, Jinhua, Lishui and other places also have varying degrees of death in Hsinchu.
其他文献
一九七二年,我们大队发动群众,大打了一场防治萝卜根蛆的人民战争,使萝卜有虫率由七一年的百分之九十下降为百分之七点五,亩产由七一年的三千一百三十三斤提高到四千七百八
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊
我县地处海南岛东部,气候温和,终年无霜雪,1971—1978年日平均气温在10℃以下仅出现5天,禾苗终年生长。为摸清褐稻虱在我县的发生规律,掌握防治关键,进行了室外饲养观察、田
【本刊讯】来自全国各地近三百多名青少年儿童日前汇集在我国目前规模最大的青少年活动基地——上海东方绿舟,于2010年8月8日晚上举行名为“庆世博创千面电鼓基尼斯纪录暨争
Objective To evaluate the antioxidant activities of different chemical constituents from Astragalus mongholicus Bunge and their protection against xanthine (XA)
背景:近年来,细胞因子在骨质疏松中的作用备受关注,尤其血清白细胞介素6(IL-6)被认为是调节骨吸收的重要因子。目的:观察实验性老年骨质疏松大鼠灌服补肾健脾活血方药后骨密
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
开营的第一天。夏令营组委会前一晚忙碌的气氛还未消散,半夜还有海南队的营员从天而降,他们办完入住手续,真正住下就已经快三点了。早晨6点新一天的工作就已经开始了。按照丁
目的:探讨复方玫瑰胶囊对家兔心肌缺血—再灌注损伤的保护作用。方法:以家兔血清中GSH-PX、H2O2为指标进行实验观察。结果:复方玫瑰胶囊对心肌缺血—再灌注损伤家兔血清中GSH
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
期刊