本文關(guān)鍵詞： 植煙土壤 土壤肥力 綜合評價　出處：《云南農(nóng)業(yè)大學(xué)學(xué)報(自然科學(xué))》2017年01期 　論文類型：期刊論文

【摘要】：為綜合評價大理州植煙土壤肥力狀況,根據(jù)植煙面積采集9個紅塔基地單元縣具有代表性的基礎(chǔ)土壤樣品,以土壤p H、有機(jī)質(zhì)、水解氮、有效磷、速效鉀等10個指標(biāo)建立肥力指標(biāo)體系,結(jié)合相關(guān)性分析和模糊數(shù)學(xué)隸屬度函數(shù)模型(Fuzzy)對各基地單元植煙土壤綜合肥力進(jìn)行評價。結(jié)果顯示:(1)全州紅塔基地主要植煙土壤p H、水解氮、有效磷、速效鉀含量適宜,有機(jī)質(zhì)含量豐富,交換性鎂、水溶性氯含量整體偏高,交換性鈣和有效硫含量遠(yuǎn)高于烤煙適宜生長范圍上限,土壤有效硼則含量普遍不足;各區(qū)域土壤養(yǎng)分指標(biāo)均存在中等程度的變異,其中,交換性鈣、有效硫和水溶性氯變異范圍較大;(2)全州土壤綜合肥力指數(shù)為0.58,變幅為0.15~0.95,平均變異系數(shù)28.2%,土壤肥力狀況良好,其中漾濞、南澗、永平和云龍4縣土壤肥力達(dá)到Ⅰ級,巍山和彌渡為Ⅱ級,賓川和祥云為Ⅲ級,大理市為Ⅳ級(土壤IFI值僅為0.36),與聚類分析結(jié)果一致;(3)各縣(市)土壤樣本分布頻率結(jié)果表明:賓川縣和大理市的低肥力土壤存在比例較大,分別為34.1%和51.1%,其余縣(市)土壤多集中在中高肥力等級。
[Abstract]:In order to evaluate soil fertility of tobacco planting in Dali prefecture, 9 representative basic soil samples were collected according to tobacco planting area. Soil pH, organic matter, hydrolyzed nitrogen and available phosphorus were used. Ten indexes, such as available potassium, were used to establish a fertility index system. Combined with correlation analysis and fuzzy mathematical membership function model, the comprehensive fertility of tobacco planting soil in each base unit was evaluated. The results showed that the content of pH, hydrolyzed nitrogen, available phosphorus and available potassium in tobacco planting soil of Hongta base was suitable. The contents of organic matter, exchangeable magnesium and water soluble chlorine were relatively high, the contents of exchangeable calcium and available sulfur were much higher than the upper limit of suitable growth range of flue-cured tobacco, and the content of available boron in soil was generally insufficient. Among them, exchangeable calcium, available sulfur and water-soluble chlorine had a large range of variability. The comprehensive fertility index of soil was 0.58, the range of variation was 0.150.95, the average coefficient of variation was 28.2and the soil fertility was good. The soil fertility of Yangbi, Nanjian, Yongping and Yunlong counties reached grade 鈪，

本文編號：1533975