检索规则说明:AND代表“并且”;OR代表“或者”;NOT代表“不包含”;(注意必须大写,运算符两边需空一格)
检 索 范 例 :范例一: (K=图书馆学 OR K=情报学) AND A=范并思 范例二:J=计算机应用与软件 AND (U=C++ OR U=Basic) NOT M=Visual
机构地区:[1]老厂乡林业工作站,云南会泽654208 [2]西南林业大学林学院,云南昆明650224
出 处:《林业调查规划》2015年第6期84-87,共4页Forest Inventory and Planning
摘 要:为了解经营管理对核桃(Juglans regia)产量的影响,对会泽县老厂乡8个村的45块核桃进行实地和问卷调查。将核桃经营管理分为9种类型。其中,栽培后任其自然生长的粗放管理方式所占比例最大,达种植户的37.8%;有4类农户(各类仅占2.2%)积极地探索促进树体生长、开花结实和品种改良等技术措施。老厂乡属核桃适宜栽培的高海拔区域,一般栽培后第5年核桃开始挂果,7年生时,集约经营的平均单株产量可达11.5 kg/株。核桃产量与经营的集约程度高度正相关。In order to understand the effects of the management model on bearing fruit and yield of Juglans regia,the total 8 villages including 45 sampling plots of cultivated walnut forests were investigated by field survey and questionnaire in Laochang Township,Huize County,Yunnan Province. The results showed that there were 9 types of management models for this township. Among these models,the maximum proportion was extensive management model which Juglans regia tree was naturally growth without any tending,and farmers were account for 37. 8%; and 4 types of famers( each type was 2. 2% of total survey plots,respectively) were positively to explore advanced techniques of facilitated tree growth,flowering and bearing fruit,variety improvement,etc. Laochang Township was suitable high altitude area of growing the walnut. In the area,generally,the walnut trees started bearing fruits after planting for 5years,and mean yield of 7-year-old trees could be 11. 5 kg / tree for intensive management model. Yield of Juglans regia was highly correlated to the levels of intensive management.
分 类 号:S750[农业科学—森林经理学] S792.13[农业科学—林学]
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在载入数据...
正在链接到云南高校图书馆文献保障联盟下载...
云南高校图书馆联盟文献共享服务平台 版权所有©
您的IP:216.73.216.171