發(fā)布時間：2018-06-15 00:18

  本文選題：紅壤 + 調(diào)理劑�。� 參考：《中國土壤與肥料》2017年05期

【摘要】：在南方紅壤地區(qū),土壤酸化加劇、養(yǎng)分貧瘠化嚴(yán)重,研發(fā)紅壤改良的技術(shù)和物化產(chǎn)品,對作物均衡增產(chǎn)和紅壤可持續(xù)利用有重要意義。紅壤旱地連續(xù)3年定位種植油菜-花生,花生品種為贛花5號,油菜品種為豐油730。調(diào)理劑為自行研制的專利產(chǎn)品,已經(jīng)實(shí)現(xiàn)了產(chǎn)業(yè)化。研究了紅壤調(diào)理劑對土壤微結(jié)構(gòu)、物理性狀、養(yǎng)分和pH值的影響,并對花生、油菜的產(chǎn)量進(jìn)行了分析。結(jié)果表明:1)施用調(diào)理劑后,從微觀結(jié)構(gòu)來看,紅壤的致密性降低、孔隙度增加,土壤顆粒直徑4μm;2)施用調(diào)理劑的土壤容重顯著降低,孔隙度增加到59%以上,大顆粒水穩(wěn)性團(tuán)聚體(0.25 mm)含量增加幅度為1.6%~14.0%,分形維數(shù)顯著降低,并且與0.25mm粒徑的團(tuán)粒結(jié)構(gòu)含量間呈極顯著線性相關(guān);3)施用調(diào)理劑的土壤電導(dǎo)率、有機(jī)碳、礦質(zhì)態(tài)氮、有效磷、速效鉀含量均提高,提高幅度在4.3%~143.7%之間;4)施用調(diào)理劑還降低了紅壤的酸性,pH值從對照處理的5.28提高到5.82,差異顯著;5)施用調(diào)理劑,花生和油菜增產(chǎn)幅度分別在13.1%~24.8%、10.3%~21.6%之間;6)應(yīng)用筆者研制的紅壤調(diào)理劑,可有效改善紅壤旱地的理化性質(zhì),提高油菜和花生產(chǎn)量,其用量在2 250~3 000 kg/hm~2時較佳。
[Abstract]:In the red soil region of southern China, soil acidification is intensified, and nutrient depletion is serious. It is of great significance to develop techniques and physical and chemical products for the improvement of red soil, which is of great significance for the balanced increase of crop yield and the sustainable utilization of red soil. Rapeseed-peanut was planted in red soil upland for 3 years. The peanut variety was Ganhua 5 and the rape variety was Fengyou 730. Conditioning agent for self-developed patent products, has achieved industrialization. The effects of soil conditioning agents on soil microstructure, physical properties, nutrients and pH value were studied, and the yield of peanut and rape were analyzed. The results showed that the densification of red soil decreased, the porosity increased, and the soil particle diameter increased 4 渭 m ~ (2) the bulk density of the treated soil decreased significantly, and the porosity increased to more than 59%. The soil conductivity, organic carbon, mineral nitrogen, available phosphorus were significantly correlated with the particle structure content of 0.25mm, and the fractal dimension was significantly decreased, and the soil electrical conductivity, organic carbon, mineral nitrogen, available phosphorus were significantly correlated with the content of granular structure of 0.25mm particle size, and the soil electrical conductivity, organic carbon, mineral nitrogen and available phosphorus were increased by 0.25mm). The content of available potassium was increased, the range was between 4.3% and 143.7%, and the pH value of acidic soil increased from 5.28 to 5.82, the difference was significant (5). The yield of peanut and rapeseed were increased by 13.1wt% and 10.3%, respectively. The application of the red soil conditioner developed by the author could effectively improve the physical and chemical properties of red soil dryland and increase the yield of rape and peanut. The best dosage was 2 250m 3 000 kg 路hm ~ (-2) 路kg ~ (-2) 路L ~ (-1) 路L ~ (-1) 路L ~ (-1) 路L ~ (-1).
【作者單位】： 江西省農(nóng)業(yè)科學(xué)院國家紅壤改良工程技術(shù)研究中心農(nóng)業(yè)部長江中下游作物生理生態(tài)與耕作重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家科技支撐計(jì)劃(2011BAD41B01) 國家自然科學(xué)基金(31101603) 江西省學(xué)科帶頭人培養(yǎng)計(jì)劃 贛鄱555工程人選資助項(xiàng)目
【分類號】：S156.2

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本文編號：2019642