本文選題：土壤修復(fù) + 厭氧土壤滅菌法　； 參考：《浙江農(nóng)業(yè)學(xué)報(bào)》2017年07期

【摘要】：采用厭氧土壤滅菌法(anaerobic soil disinfestation,ASD)改良西瓜連作土壤,旨在探討ASD防治西瓜連作障礙的有效方法。室內(nèi)試驗(yàn)土壤樣品分別取自西瓜連作的旱田(一年中種植一季西瓜和一季其他旱作)和水田(一年中種植一季西瓜和一季水稻)。每類土壤分設(shè)5組處理:(1)對照(H1和S1,H代表旱田土,S代表水田土,下同),(2)淹水對照(H2和S2),(3)添加稻草粉末且淹水(H3和S3),(4)添加稻草粉末和硫黃粉且淹水(H4和S4),(5)添加稻草粉末和氨水且淹水(H5和S5)。每組分設(shè)15個(gè)平行樣。各組土壤樣品均放入塑料袋內(nèi),按上述方法添加物料混勻后,加水、扎口、密封,置于戶外露天培養(yǎng)20 d。采用盆栽試驗(yàn)驗(yàn)證ASD改良西瓜連作退化土壤的效果。結(jié)果表明,ASD處理后,土樣中NO3--N和SO42-的含量顯著(P0.05)降低,土壤pH值較對照和淹水對照升高,有效地調(diào)節(jié)了土壤電導(dǎo)率(EC),尤其是土壤中致病尖孢鐮刀菌(Fusarium oxysporum f.sp.niveum,FON)顯著(P0.05)受到抑制。盆栽試驗(yàn)表明,各組處理西瓜長勢均好于對照,死亡率均低于對照,西瓜產(chǎn)量均高于對照。可見,ASD可以用來改良西瓜連作土壤,防治西瓜連作障礙。
[Abstract]:The anaerobic soil sterilization method was used to improve watermelon continuous cropping soil by anaerobic soil disinfestation. The purpose of this study was to explore an effective method of preventing and treating watermelon continuous cropping obstacle by ASD.Laboratory soil samples were collected from watermelon dry fields (one season of watermelon and one season of other dry crops in a year) and paddy fields (one season of watermelon and one season of rice in a year).Each type of soil was divided into 5 groups of treatments: control H _ 1 and S _ 1N _ H represented dry soil and S represented paddy soil.The rice straw powder was added to the inundation control (H3 and S3) and the rice straw powder and sulfur powder were added, and the rice straw powder and ammonia water were added to the rice straw powder and ammonia water and flooded with H5 and S5.Each group was divided into 15 parallel samples.The soil samples of each group were put into plastic bags and mixed with the above method, then water was added, the mouth was sealed, and the soil was cultured in the open air for 20 days.Pot experiment was used to verify the effect of ASD on continuous cropping of watermelon degraded soil.The results showed that the content of NO3--N and so _ 4 ~ (2-) in soil samples decreased significantly (P _ (0.05)), and the soil pH value was higher than that of the control and flooded control, which effectively regulated the soil electrical conductivity, especially Fusarium oxysporum f. Sp.niveum FONs (P0.05).Pot experiment showed that the growth of watermelon in each group was better than that of control, the mortality was lower than that of control, and the yield of watermelon was higher than that of control.It can be seen that ASD can be used to improve watermelon continuous cropping soil and prevent watermelon continuous cropping obstacles.
【作者單位】： 蚌埠學(xué)院環(huán)境科學(xué)實(shí)驗(yàn)中心;南京師范大學(xué)地理科學(xué)學(xué)院;
【基金】：蚌埠學(xué)院優(yōu)秀人才項(xiàng)目([2014]182) 安徽省級質(zhì)量工程項(xiàng)目(2015zy068) 安徽省振興計(jì)劃項(xiàng)目(2014zdjy137) 安徽省級大學(xué)生創(chuàng)新創(chuàng)業(yè)計(jì)劃項(xiàng)目(201611305073)
【分類號】：S156

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