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2.
On the basis of analysis and prediction , this dissertation discusses agricultural development overall regional strategy of the hhh plain and the key lies in support of the technology system and increasing farm capital input 在系统分析与预测的基础上，探讨了该平原农业发展的总体区域战略，关键在于技术体系的支撑及增加农业资本投入。
3.
The structure adjustment should follow many principles such as the basic theory of regional agriculture development and food safety principia , etc . reviewing from whole industrial structure , the primary industry is decreasing obviously ; the secondary industry shows fluctuant trend ; and the tertiary industry is increasing wholly . the emphases of agricultural structural adjustment of the hhh plain is on the planting adjustment and the planting combining with the animal husbandry 结构调整应遵循区域农业发展的基本理论及粮食安全等多条原则；从整体产业结构来论，第一产业有明显下降趋势，第二产业表现为波动变化，第三产业整体上升；该平原农业结构调整的重点是种植业内部的调整、种植业与畜牧业结合。
4.
The dissertation reviews the agriculture production history , analyzes the status quo , the change of river system , soil evolvement and the forming course of economic position , and discusses the precondition of the agricultural development of the hhh plain . the agricultural system database of the hhh plain is set up by using mapgis software 总体上考察了黄淮海平原农业生产历史、现状形势；浅析了黄淮海平原的水系变迁，土壤演变过程及其经济区位条件的形成，初步探讨了该平原农业发展的先决条件。
5.
The product quality faces up to enormous domestic and international markets challenge and the peasants face up to the slow increasing of their incomes . the shortage of water resource is more serious for the planted system , climatic change and low utilization ratio . cultivated land resource is reducing rapidly for nature factors and urbanization process , etc . the analysis results indicate the resour ces utilization mode in the hhh plain is still high investment , high - energy consumption , and grievous pollution 农产品生产在我国占有绝对优势，但其受结构调整的影响也发生了波动性变化，其产品质量面临着国内外市场巨大的挑战，农民收入也面临着增长缓慢的挑战；水资源受种植制度、气候变化及利用率低等多种因素的胁迫作用，严重短缺；耕地资源近年来大量减少，受自然及城市化进程等因素的影响，稀缺程度加大。
6.
At the same time , there are many disadvantage factors , such as the scarceness of natural resources , the deteriorism of the ecological environment , the competition with the international market , etc . the huang - huai - hai plain ( hhh plain ) is the largest plain in china , which is becoming the important agricultural product base of " the south food supplies transport to the north " 我国农业发展已经进入了一个新阶段，农产品生产能力已经得到提升，但面临着自然资源、生态环境及加入wto后的国内外市场的多重约束。黄淮海平原是我国最大的平原，已成为“北粮南调”的重要农产品基地，其面临着全国农业发展相同的境遇，但又有着本区域农业发展特有的挑战。
7.
Based on plenty of relevant researches about agricultural development , the dissertation puts forward the agricultural structure adjustment and development strategy of the hhh plain which has great significance both of theory and practice to solve agricultural water resource shortage , to utilize the land resource high - efficiently , to develop sustainable agriculture , to take part in the world farm products market which under wto frame and to increase peasants " income 系统考查了国内外农业发展及相关研究的基础上，认为研究黄淮海平原农业结构调整及其发展战略，对解决黄淮海平原农业水资源短缺，土地资源高效利用，农业可持续发展，并参与wto框架下的世界农产品市场，提高农民收入，具有理论的和现实的重大战略意义。
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