本文選題：煙氣脫硫石膏 + 濱海鹽堿地��； 參考：《西南農(nóng)業(yè)學(xué)報(bào)》2016年06期

【摘要】：利用煙氣脫硫石膏改良濱海灘涂鹽堿地,可以加快鹽堿土壤的脫鹽過(guò)程,改善農(nóng)作物的生長(zhǎng)環(huán)境。選擇上海崇明東灘的灘涂鹽堿地,采用已獲得的技術(shù)參數(shù)和煙氣脫硫石膏配比(60 t/hm~2),通過(guò)現(xiàn)場(chǎng)試驗(yàn)研究了煙氣脫硫石膏對(duì)濱海灘涂鹽堿地土壤理化性質(zhì)和旱稻生長(zhǎng)及產(chǎn)量的影響。結(jié)果表明,在灘涂鹽堿地施用煙氣脫硫石膏改良鹽堿土壤并種植旱稻,土壤中的鹽分組成發(fā)生了明顯變化,土壤pH、交換性Na~+及土壤堿化度(ESP)顯著降低。旱稻收獲后改良土壤中的有機(jī)質(zhì)、總氮、速效鉀等營(yíng)養(yǎng)物質(zhì)含量均較未改良土壤低,土壤速效磷含量則降低了近7倍,從而降低了徑流中可溶性磷進(jìn)入水體的風(fēng)險(xiǎn)。同時(shí),改良土種植的旱稻主要根系指標(biāo)、地上部分株高以及地下、地上生物量均顯著增加(P0.05),旱稻的主要產(chǎn)量指標(biāo)及總產(chǎn)量也較未改良區(qū)域顯著性增加。因此,施用煙氣脫硫石膏能夠顯著改良濱海灘涂鹽堿地的理化性質(zhì),促進(jìn)旱稻的根系和植株生長(zhǎng),從而提高旱稻的產(chǎn)量,并改善農(nóng)業(yè)生態(tài)環(huán)境。
[Abstract]:Using flue gas desulphurization gypsum to improve saline-alkali land in coastal beach can accelerate the desalination process of saline-alkali soil and improve the growing environment of crops. The effects of flue gas desulphurization gypsum on soil physical and chemical properties, upland rice growth and yield of saline-alkali land in Dongtan, Chongming, Shanghai, were studied by using the obtained technical parameters and flue gas desulfurization gypsum ratio of 60 t / h ~ (-2) h ~ (-1). The results showed that applying flue gas desulphurization gypsum to improve saline-alkali soil and planting upland rice, the salt composition in the soil changed obviously, and the pH, exchangeable Na ~ and soil alkalinity ESPs decreased significantly. The contents of organic matter, total nitrogen, available potassium and other nutrients in the improved soil after harvest were lower than those in the unimproved soil, and the available phosphorus content in the soil decreased by nearly 7 times, thus reducing the risk of soluble phosphorus entering the water body in runoff. At the same time, the main root system index, plant height and underground biomass of upland rice planted in improved soil increased significantly (P 0.05), and the main yield index and total yield of upland rice were significantly higher than that of unimproved area. Therefore, the application of flue gas desulphurization gypsum can significantly improve the physical and chemical properties of saline-alkali land in coastal beach, promote the root system and plant growth of upland rice, thus increase the yield of upland rice and improve the agricultural ecological environment.
【作者單位】： 華東師范大學(xué)河口海岸學(xué)國(guó)家重點(diǎn)實(shí)驗(yàn)室;上海應(yīng)用技術(shù)學(xué)院生態(tài)技術(shù)與工程學(xué)院;上海恒德榮昌農(nóng)村環(huán)境治理有限公司;
【基金】：國(guó)家環(huán)保公益性行業(yè)科研專項(xiàng)(201109023-2) 上海市循環(huán)農(nóng)業(yè)發(fā)展關(guān)鍵技術(shù)集成示范[滬農(nóng)科推字(2012)第2-1號(hào)] 上海市科委重大項(xiàng)目-上海天文館工程建設(shè)關(guān)鍵技術(shù)研究與應(yīng)用(15dz1207900)
【分類號(hào)】：S511.6;S156.4
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本文編號(hào)：1924365