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日本海洋大牧场计划
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《水产科技情报》 1980年第5期31-31,共1页
日本农林水产省正式开始实行把日本所有沿岸、近海海域办成“海洋大牧场”的计划。该计划是把以往不利于养殖的所有海域改造为有利于鱼类栖息的环境,丰富天然饵料,使马苏大麻哈鱼.金枪鱼、嵌条扇贝等得到增殖。但在饵料、海底污梁、... 日本农林水产省正式开始实行把日本所有沿岸、近海海域办成“海洋大牧场”的计划。该计划是把以往不利于养殖的所有海域改造为有利于鱼类栖息的环境,丰富天然饵料,使马苏大麻哈鱼.金枪鱼、嵌条扇贝等得到增殖。但在饵料、海底污梁、增产受限制以及生产成本等方面存在着问题。 展开更多
关键词 日本 海洋大牧场 水产资源利用 藻类 饵料 产卵场
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Assessment of Resource-Use Efficiency in Irrigated Rice Production in Dadinkowa, Gombe State, Nigeria
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作者 Suleiman Mohammed Nasiru Abubakar +1 位作者 John E.Ochi Usman Haruna 《Journal of Agricultural Science and Technology(B)》 2014年第6期427-433,共7页
The study examined the levels of resource-use efficiency of rice farmers unde,r irrigation method in Dadinkowa, Gombe state of Nigeria. Using questionnaire, data were collected during the year 2010 irrigation season f... The study examined the levels of resource-use efficiency of rice farmers unde,r irrigation method in Dadinkowa, Gombe state of Nigeria. Using questionnaire, data were collected during the year 2010 irrigation season from 120 randomly sampled rice irrigators and the data were analyzed using multiple regression and marginal analyses. Results showed that significant factors influencing irrigated rice production were labour (P 〈 0.001), land and fertilizer (P 〈 0.01). In addition, the coefficient of determination (R2), the F-ratio and the standard error of the mean (S) were found to be 0.471, 16.37*** and 8.908, respectively. The results also indicated that efficiency values of land, seeds, fertilizer and labour were 1.234, 0.498, 2.352 and 1.620, respectively. Finally, it was found that resource-use among the farmers were not efficient thus equipment, land, fertilizer and labour inputs shall be increased by 78.3%, 18.9%, 57.5% and 38.3%, respectively, while seed input shall be reduced by 50.2% for the farmers to attain optimal resource utilization. 展开更多
关键词 EFFICIENCY resource-use irrigated rice Dadinkow Gombe
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Tensiometer as an Irrigation Management Tool and Its Effect on Water Use and Yield of Open Field Grown Cucumber
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作者 Rola Jad Allah Nasser Jeber Yousef Sholi 《Journal of Agricultural Science and Technology(B)》 2016年第5期303-306,共4页
Water is scarce in Palestine and water saving is becoming very important issue. Water management is one of the promising solutions to save water. The purpose of this work was to study the effect of two types of irriga... Water is scarce in Palestine and water saving is becoming very important issue. Water management is one of the promising solutions to save water. The purpose of this work was to study the effect of two types of irrigation regimes on water consumption, yield and growth parameters of cucumber (Cucumis sativus L.) under open field conditions. Cucumbers were grown on a silty-clay soil in Palestinian local conditions. The irrigation regimes used were farmer based irrigation (FI) and tensiometer based irrigation (TI). The results showed that there were no significant difference in crop yield between FI (3.5 kg/plant) and TI (3.4 kg/plant). Dry matter was 14.7% less in TI treatment than that in FI treatment, while water saving was 35.7% in TI treatment. Thus, proper use of tensiometer could be utilized for a better use and management of water resource. Selection of proper water potential set-points according to the cultivation season is crucial for satisfactory results. 展开更多
关键词 TENSIOMETER CUCUMBER water use efficiency water saving.
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全国渔业经济科学规划座谈会在舟山举行——全国渔业经济科学研究会正式成立
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作者 翁来德 《水产科技情报》 1979年第3期20-20,共1页
全国渔业经济科学规划座谈会,去年年底在舟山举行。
关键词 中国 渔业经济 发展规划 经验借鉴 渔业现代化 水产资源利用
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