【摘要】：【目的】調(diào)查哈密第十三師耕層土壤養(yǎng)分狀況,分析耕層土壤養(yǎng)分現(xiàn)狀,空間的分布特征及其演變趨勢,開展地力評價,為高標(biāo)準(zhǔn)農(nóng)田建設(shè)和合理施肥提供理論依據(jù)。【方法】對2012~2015年哈密第十三師耕層土壤養(yǎng)分進(jìn)行采樣和分析,并與1984年全國第二次土壤普查及2007年土壤養(yǎng)分歷史資料進(jìn)行對比,運用統(tǒng)計學(xué)方法分析第十三師耕層土壤養(yǎng)分現(xiàn)狀和演變趨勢。運用層次分析法分析計算各評價因素組合權(quán)重,用特爾斐法開展地力評價,通過不同土壤養(yǎng)分之間的相關(guān)性和變異性分析,明確哈密第十三師土壤養(yǎng)分的分布特征�！窘Y(jié)果】哈密第十三師耕層土壤有機質(zhì)平均值為14.5 g/kg,屬四級水平;堿解氮含量平均值為87 mg/kg,屬四級水平;有效磷含量平均值為15.39 mg/kg,屬于三級水平;速效鉀含量平均值為197 mg/kg,屬于二級水平;從1984~2015年,耕地土壤有機質(zhì)和有效磷含量呈下降趨勢。土壤堿解氮和有效磷含量是升高趨勢。土壤堿解氮和有效磷含量有升高的趨勢。【結(jié)論】研究區(qū)土壤肥力整體狀況較好,農(nóng)田土壤有機質(zhì)、堿解氮含量普遍中等偏低。速效磷含量中等偏上。速效鉀含量較為豐富。
[Abstract]:[objective] to investigate the nutrient status of cultivated layer soil in the 13th Division of Hami, analyze the status quo of soil nutrient, spatial distribution characteristics and evolution trend, and carry out the evaluation of soil fertility. [methods] soil nutrients in the cultivated layer of the 13th division of Hami from 2012 to 2015 were sampled and analyzed, and compared with the second soil census in 1984 and the historical data of soil nutrients in 2007. The present situation and evolution trend of soil nutrients in the cultivated layer of the 13th Division were analyzed by statistical method. Analytic hierarchy process (AHP) was used to calculate the combined weights of the evaluation factors, and Delphi method was used to evaluate the soil fertility. The correlation and variability of different soil nutrients were analyzed by means of the method of analytic hierarchy process (AHP). The distribution characteristics of soil nutrients in the 13th division of Hami were determined. [results] the average value of soil organic matter in the cultivated layer of the 13th division of Hami was 14.5 g / kg, belonging to the fourth grade level. The average content of available nitrogen, available phosphorus, available potassium, available potassium and available potassium were 87 mg/kg, 15.39 mg/kg, and 197 mg/kg, respectively, and that of available phosphorus and available potassium belonged to the second level and the second level, respectively. From 1984 to 2015, the content of organic matter and available phosphorus in cultivated soil decreased. The contents of soil alkaline hydrolyzed nitrogen and available phosphorus are increasing trend. [conclusion] the soil fertility in the study area is better, the soil organic matter and the alkali-hydrolyzed nitrogen content in farmland soil are generally medium and low. [conclusion] the content of soil organic matter and available phosphorus in the study area are generally medium and low. The content of available phosphorus is middle and high. Available potassium content is relatively rich.
【作者單位】： 石河子大學(xué)農(nóng)學(xué)院;新疆生產(chǎn)建設(shè)兵團(tuán)第十三師現(xiàn)代農(nóng)業(yè)投資公司;新疆生產(chǎn)建設(shè)兵團(tuán)第十三師紅星四場;新疆生產(chǎn)建設(shè)兵團(tuán)第十三師農(nóng)業(yè)局;
【基金】：國際合作專項“綠洲棉田生態(tài)環(huán)境監(jiān)測與預(yù)警技術(shù)研究”(2015DFA11660)~~
【分類號】：S158
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本文編號：2444770