freepeople性欧美熟妇, 色戒完整版无删减158分钟hd, 无码精品国产vα在线观看DVD, 丰满少妇伦精品无码专区在线观看,艾栗栗与纹身男宾馆3p50分钟,国产AV片在线观看,黑人与美女高潮,18岁女RAPPERDISSSUBS,国产手机在机看影片

正文內(nèi)容

油茶論文:油茶芽苗砧嫁接容器育苗新技術(shù)-展示頁

2024-11-19 23:02本頁面
  

【正文】 ng3,liu xiao-wu4, cai jing-yong1,she yuan-guo1,chen ling-ling1 (1. hubei vocational college of ecologic enginee ring ,wuhan 430200,china; 2. ji ngshan county bureau of forestry, jingshan 43 1800,hubei,china; 3.jingshan forestry technology extension center,jingshan 43 1800,hubei,china; 4. state-owned huzhuashan forest farm of hubei province, jingshan 43 1800,hubei,china) abstract: based on container seedling-raising of camellia oleifera abel. bud-stock grafting which was a widely used technique in production, a new technique of two-stage container seedling raising of c. oleifera bud-stock grafting was experimented . furthe rmore, seven advantages of the new technique compared with the conventional approach were summarized. t he purpose was to optimize the conventional two-stage seedling raising, quicken seedling raising, minimize seedling raising processes, realize low cost, good maneuverability, high survival rate and seedling emergence. the practice indicated that the new technique might gain wide extension in c. oleifera production. key words: camellia oleifera abel.; bud-stock grafting; container seedling raising 油茶(camell ia oleifera abel.)是我國主要的經(jīng)濟(jì)林木,具有適應(yīng)性強(qiáng)、經(jīng)營成本低、收益大、用途廣等特點。同時總結(jié)了該新技術(shù)與常規(guī)育苗技術(shù)相比較所具有的七項優(yōu)勢。 油茶論文:油茶芽苗砧嫁接容器育苗新技術(shù) 摘要:油茶(camellia oleifera abel.)芽苗砧嫁接容器育苗是目前生產(chǎn)上普遍采用的
點擊復(fù)制文檔內(nèi)容
黨政相關(guān)相關(guān)推薦
文庫吧 www.dybbs8.com
備案圖鄂ICP備17016276號-1