STUDIES ABOUT THE SEAWATER USE TO HORTICULTURAL CROP IN DRY REGIONS

干旱地区园艺作物利用海水的研究

• 批准号: 03660024
• 负责人: TAKEUCHI Yoshitika
• 金额: $ 0.26万
• 依托单位: Tottori University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03660024/
• 关键词: desert; irrigation water; salt water irrigation; sand dune; potential; lettuce; seawater; tension meter; 砂漠化; 有果皮; 種子; 発芽試験; 無果皮; 発芽率; 化学肥料; 淡水; 農業生産; 乾燥地; 園芸作物; 海水利用; 海水混合システム; 砂丘畑

On this study for crop cultivation in sand dune using of seawater to irrigate and mineral nutrient in diluted seawater were investigated. This study was practiced in two years. Spinach and pakchoi and so on were cultivated in this study. The results could not certify diluted seawater was useful on crop cultivation. Because degree of evaporation from soil surface was different on sult concentration, soil water must be measured correctly.Therefore soil moisture tention sensor to use on sand dune was developed, and practical use of sensor was investigated. The sensors being on the marker had errors by temperature, so these sensors must not be used on crop cultivation. Consequently a sensor was not affected by temperature was developed. Details of the development and characteristic of the sensor to scientific magazine.Lettuce was cultivated with developed sensor in greenhouse. In result, squipment to irrigate with the sensor could irrigate automatically on bed cultivation with sand was proved. Other hand, progress of ddrought resistance by vesicular-arbuscula mycorrhizae(VAM) was studied. Irrigation was done automatically by the sensor, but effect of VAM was not certified.

本研究对利用海水灌溉的沙丘农作物栽培及稀海水中的矿质营养进行了研究。这项研究是在两年的时间里进行的。本研究以菠菜、小白菜等为材料进行栽培试验。结果不能证明稀释海水对农作物栽培是有益的。由于土壤表面蒸发量随土壤中硫含量的不同而不同，因此必须正确测量土壤水分，为此研制了适用于沙丘的土壤水分张力传感器，并对传感器的实际应用进行了研究。标记上的传感器因温度而产生误差，因此这些传感器不得用于作物栽培。因此，开发了不受温度影响的传感器。详细介绍了该传感器的发展和特点，并利用研制的传感器在温室中栽培了番茄。试验结果表明，该传感器灌溉装置能够在沙床栽培中实现自动灌溉。另一方面，研究了泡囊丛枝菌（VAM）的抗性研究进展。冲洗是由传感器自动完成的，但VAM的效果未经认证。