目前,華北平原農(nóng)業(yè)可持續(xù)發(fā)展受到水資源短缺和水質惡化的限制。然而,就在水資源極度緊缺的情況下,豐富的地下淺層咸水資源仍然未被合理開發(fā)利用,主要是由于咸水灌溉抑制作物生長和造成土壤鹽漬化。近年來,提出了一種新的咸水灌溉方法,即在作物咸水敏感-非敏感階段鹽水交替灌溉。于2014年10月至2015年6月和2015年10月到2016年6月,在衡水旱地農(nóng)業(yè)試驗站進行咸淡水交替灌溉影響（AIFS）冬小麥生產(chǎn)力和土壤鹽漬化的試驗研究。研究中共設置5個處理,每個處理3次重復,共15個小區(qū),按照隨機區(qū)組排列。處理包括CK（無灌溉）、AIFS1（苗期和開花-灌漿期灌溉咸水,返青期灌溉淡水）、AIFS2（苗期和返青期灌溉咸水、抽雄期灌溉淡水）、AIFS3（返青期灌溉淡水,開花-灌漿期灌溉咸水）和AIFS4（返青期灌溉咸水,開花-灌漿期灌溉淡水）。取樣測定土壤水分含量、EC和pH值以及生物質積累。在生長季結束時,測定了小麥產(chǎn)量。最后利用這兩年的實驗數(shù)據(jù)來驗證AquaCrop模型,并用驗證后的模型評估AIFS對土壤鹽漬化的長期影響。研究結果表明:（1）經(jīng)過兩年AIFS的處理土壤電導率和pH值無顯著差異,但土壤水... 

【文章來源】：中國農(nóng)業(yè)科學院北京市

【文章頁數(shù)】：52 頁

【學位級別】：碩士

【文章目錄】：
摘要
abstract
CHAPTER ONE INTRODUCTION
    1.1 Background
    1.2 Literature review
    1.3 Objectives
CHAPTER TWO MATERIALS AND METHODS
    2.1 Description of the experimental site
    2.2 Treatments and irrigation amounts
    2.3 Weather data collection
    2.4 Soil water content, pH and EC measurements
    2.5 Crop data collection
    2.6 Estimation of crop water use and WUE
    2.7 Verification of Aquacrop model and its application
    2.8 The technical routing map of the research
CHAPTER THREE EFFECTS OF ALTERNATE IRRIGATION WITH FRESH AND SALINE WATER ON SOIL SALINIZATION PROCESS AND WHEATPRODUCTIVITY
    3.1 Effect of alternate irrigation with fresh and saline water on soil water content
    3.2 Effect of alternate irrigation with fresh and saline water on soil EC and pH
    3.3 Effect of alternate irrigation with fresh and saline water on crop biomassaccumulation
    3.4 Effect of alternate irrigation with fresh and saline water on wheat production andwater use efficiency (WUE)
CHAPTER FOUR VERIFICATION AND PREVISION WITH AQUACROP MODEL
    4.1 VERIFICATION OF AQUACROP MODEL WITH EXPERIMENTAL DATA
    4.2 The application of verified aquacrop model to assess the long term effects of AIFS
CHAPTER FIVE CONCLUSION AND RECOMMENDATION
    5.1 Conclusion
    5.2 Recommendation
References
ACKNOWLEDGEMENTS
DEDICATION
RESUME



本文編號：3334351