本文選題：設(shè)施蔬菜 + 蔬菜產(chǎn)量��； 參考：《云南農(nóng)業(yè)大學(xué)學(xué)報(bào)(自然科學(xué))》2017年01期

【摘要】：以云南省晉寧縣5年的設(shè)施蔬菜土壤為研究對(duì)象,采用野外調(diào)查、化學(xué)分析與數(shù)理統(tǒng)計(jì)相結(jié)合的方法,對(duì)設(shè)施菜地各土層(0~10 cm,10~20 cm和20~30 cm)的土壤養(yǎng)分、理化性質(zhì)及其與產(chǎn)量的關(guān)系進(jìn)行初步研究,探討限制設(shè)施蔬菜產(chǎn)量的主要土壤因子。結(jié)果表明:(1)大棚菜地土壤養(yǎng)分含量呈明顯的上高下低型垂直分布,其中0~10 cm土層養(yǎng)分含量大量積累,設(shè)施土壤酸化、次生鹽漬化主要集中在0~20 cm土層;(2)供試土壤pH與作物產(chǎn)量呈極顯著正相關(guān)(n=39,r=0.462**),EC與作物產(chǎn)量呈極顯著負(fù)相關(guān)(n=39,r=-0.448**),故土壤pH、EC是限制該區(qū)域設(shè)施蔬菜產(chǎn)量的主導(dǎo)因子;(3)氮肥投入量與土壤pH呈極顯著負(fù)相關(guān)(n=39,r=-0.759**),與土壤EC呈極顯著正相關(guān)(n=39,r=0.802**),表明氮肥投入量的增加,加速了設(shè)施蔬菜土壤酸化和次生鹽漬化的進(jìn)程。因此,為緩解土壤酸化和次生鹽漬化,保證設(shè)施蔬菜生產(chǎn)的可持續(xù)發(fā)展,建議該區(qū)域減少化肥(尤其是氮肥)投入量,增施有機(jī)肥。本研究可為設(shè)施蔬菜生產(chǎn)的養(yǎng)分管理及土壤可持續(xù)利用提供參考依據(jù)。
[Abstract]:The soil nutrients of greenhouse vegetable soil in Jinning County, Yunnan Province, were studied by field investigation, chemical analysis and mathematical statistics. The soil nutrients of 10 ~ 10 cm ~ (10 cm) ~ 10 cm ~ (20 cm) and 20 ~ 30 cm ~ (30 cm) of soil layer in greenhouse vegetable field were studied by means of field investigation, chemical analysis and mathematical statistics. The physicochemical properties and the relationship between physical and chemical properties and yield were studied, and the main soil factors limiting the yield of greenhouse vegetables were discussed. The results showed that the soil nutrient content in the greenhouse was significantly higher than that in the lower one, and the nutrient content in the 0 ~ (10 cm) soil layer accumulated a lot, and the soil acidified in the facility. Secondary salinization was mainly concentrated in 0 ~ 20 cm soil layer.) there was a very significant positive correlation between soil pH and crop yield. There was a very significant negative correlation between EC and crop yield. Therefore, soil pH EC is the main factor limiting vegetable yield in this area. There was a very significant negative correlation between the input load and soil pH, and a very significant positive correlation between input load and soil EC, indicating the increase of nitrogen input. The process of soil acidification and secondary salinization was accelerated. Therefore, in order to alleviate soil acidification and secondary salinization and ensure the sustainable development of protected vegetable production, it is suggested that the amount of chemical fertilizer (especially nitrogen fertilizer) should be reduced and organic fertilizer should be applied in this area. This study can provide reference for nutrient management and soil sustainable utilization of vegetable production.
【作者單位】： 云南農(nóng)業(yè)大學(xué)資源與環(huán)境學(xué)院;西南林業(yè)大學(xué)校長(zhǎng)辦公室;
【基金】：公益性行業(yè)(農(nóng)業(yè))科研專項(xiàng)基金項(xiàng)目(201103003,201103004) 云南省省級(jí)生態(tài)建設(shè)專項(xiàng)資金項(xiàng)目(A3007501) 云南農(nóng)業(yè)大學(xué)第八屆學(xué)生科技創(chuàng)新創(chuàng)業(yè)行動(dòng)基金項(xiàng)目資助(2015ZKX056)
【分類號(hào)】：S626;S151.9

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本文編號(hào)：1983207