【摘 要】
：
锈病是黄花菜主要病害，种植地区常年发生，一般发病率３０％～５０％，重病地区或重病地块病株常达１００％，轻者减产１０％左右，严重时减产３０％以上，特别严重地块可造成绝收。 症状识别锈病仅为害叶片和花茎，初期在叶
论文部分内容阅读
锈病是黄花菜主要病害，种植地区常年发生，一般发病率３０％～５０％，重病地区或重病地块病株常达１００％，轻者减产１０％左右，严重时减产３０％以上，特别严重地块可造成绝收。 症状识别锈病仅为害叶片和花茎，初期在叶片和花茎表面出现灰白至鸭黄色棱形小斑，逐渐变成桔
Rust disease is the main disease of lily, planting area perennial occurs, the general incidence of 30% to 50%, seriously ill areas or seriously ill land mass often up to 100% of the disease, the light yield reduction of about 10%, severe cut more than 30%, especially serious Land can cause absolute failure. Symptoms Identification of rust is the only damage to leaves and flower stems, early leaves and stems appear gray to duck yellow prism small spots, gradually become orange
其他文献
1979年3月28日,美国三英里岛核电站发生意外事故。作者对核辐射与群体癌症危险的关系进行了研究。核辐射的暴露剂量依居民住宅至核电站的距离而定。以核电站为中心,分别以0～6
闽清县是我省橄榄的主要产区之一,全县橄榄种植面积近2700ｈｍ2,预计今年产量达3700ｔ,特别是近几年发展迅猛,仅1998年就新植337ｈｍ2,因此苗木培育尤为重要。在培育苗木时要把好以下栽
造成辣椒落花落果的原因很多，有生理方面的，也有病理方面的辣椒是喜空气干燥而土壤湿润的环境，如气温偏高（超过３５度），即影响授粉、受精，又易引起植株徒长，使植株同化功能力减弱，呼吸消耗
Hepatitis B virus (HBV) transgenic mice spontaneously develop hepatoma within the 20 months of life.We used these mice as natural models of hepatocellular c
The ORF2 protein of hepatitis E virus (HEV) is essential for the attachment and cell entry of the virus, but their mechanisms are still unknown because of t
荔枝为芗城区主要水果 ,1999年全区种植面积 85 6 5亩 ,采摘面积 7381亩 ,总产 2 930吨。主栽品种 (约 90 %)为兰竹、乌叶等品种 ,产期集中 ,常造成果农增产不增收。为了调整
Objective To detection of hepatitis E virus (HEV) among swines, rats, dogs, macaque, fishes in the related in Guangxi province.Methods 170 HEV antibody posi
A candidate bacterially expressed recombinant hepatitis E virus (HEV) vaccine, HEV 239 vaccine, had been shown promising efficacy in rhesus monkeys.Phase Ⅱ
Despite the big progresses in the field of regenerative medicine, the loss of neurons remains essentially an unresolved challenge. Among the different approache
通过对 6 0多份瓠瓜资源的试种 ,单株选择 ,自交分离 ,选出优良自交系 1 2个 ,经对预配杂交组合的观察研究表明 ,杂交组合浙蒲1号 (暂定名 )具有生长势强 ,结瓜性好 ,成熟早