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Evaluation of Agricultural Resources in the Red River Delta

红河三角洲农业资源评价

基本信息

批准号：
09041156
负责人：
NAWATA Eiji
金额：
$ 11.01万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (A).
财政年份：
1997
资助国家：
日本
起止时间：
1997 至 1999
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09041156/
关键词：
The Red River Delta Land use Agricultural resources Yield model Water cycle Nutrient cycle Utilization efficiency Cooperative

项目摘要

A series of experiments were carried out at experimental fields of Vietnam Agricultural Science Institute (Hanoi, Vietnam) for 3 years, in order to construct a model to estimate rice attainable yield. The effect of flooding on 3 main rice varieties in the Red River Delta was quantified and incorporated into the model. In addition, the effects of transplanting shock was also incorporated into the model. The results of preliminary validation of the model using data obtained at farmers' fields suggest the applicability of the model for the yield estimation.To clarify the changes of land use, agricultural technologies and resource input, and the movement of agricultural product after Doi Moi, questioner survey with 19 main subjects and nearly 1,000 items was carried out on all the 218 cooperatives in Nam Ha 1 Irrigation Scheme. Amount of collected data were enormous and the full analysis was not completed yet, but the results showed that cooperatives in the area have diversified land use s … More ystems pronouncedly. The analysis of the results of cropping systems in the Coc Thanh Cooperative suggested that cultivation systems in that cooperative is remarkably intensified.Aiming at the evaluation of the utilization efficiency of water and soil resources, water and nutrient cycle of Nam Ha 1 Irrigation scheme was analyzed. In both irrigation and drainage water, the contents of nitrogen and phosphorus had a tendency to increase during the rainy season. The amount of nitrogen was much lower than expected. At the Coc Thanh Cooperative, clear differences of phosphorus concentration water were observed between irrigation and drainage, and the soil analysis of planting fields of Coc Thanh Cooperative suggested that some portions of drained phosphorus seemed to be from vegetable fields.Considering the above results, the agricultural production systems in the Red River Delta is characterized by the intensification and diversification and it is shown that the agricultural resources are utilized efficiently. The outflow of nutrient to outer environment was at low level, suggesting the soundness of the system itself. Less

在越南农业科学研究所（河内，越南）的试验田进行了3年的一系列试验，以建立一个模型来估计水稻可达产量。将洪水对红河三角洲3个主要水稻品种的影响量化并纳入模型。此外，模型中还考虑了移植休克的影响。利用农户田间实测数据对模型进行初步验证，结果表明该模型可用于产量估算。为了弄清革新开放后土地利用、农业技术和资源投入的变化以及农产品的动态，对19个主要对象和近1个农户进行了问卷调查。在Nam Ha 1灌溉计划中，对所有218个合作社进行了000个项目。收集的数据量巨大，尚未完成全面的分析，但结果表明，该地区合作社的土地利用方式多样化， ...更多信息系统发音。对Coc Thanh合作社种植制度的结果分析表明，该合作社的种植制度得到了显著强化。为了评价水土资源利用效率，对Nam Ha 1灌溉方案的水分和养分循环进行了分析。灌溉水和排水中的氮、磷含量在雨季都有增加的趋势。氮的量比预期的要低得多。在Coc Thanh合作社，观察到灌溉和排水之间磷浓度水的明显差异，Coc Thanh合作社种植田的土壤分析表明，部分流失的磷似乎来自蔬菜田。考虑到上述结果，红河三角洲农业生产系统具有集约化和多样化的特点，农业生产系统的结构变化表明，资源得到有效利用。营养盐向外界环境的流出量较低，说明系统本身是健全的。少