本文關(guān)鍵詞： 土壤養(yǎng)分供應(yīng) 產(chǎn)量 養(yǎng)分吸收 養(yǎng)分利用率 高粱　出處：《中國土壤與肥料》2016年06期 　論文類型：期刊論文

【摘要】：為探討遼西褐土區(qū)土壤養(yǎng)分供應(yīng)能力,2012年和2014年采用隨機(jī)區(qū)組試驗(yàn)研究了不同施肥處理下土壤養(yǎng)分供應(yīng)、高粱產(chǎn)量及養(yǎng)分吸收利用的變化。試驗(yàn)包括CK、NPK、PK、NK和NP 5個(gè)處理,3次重復(fù)。結(jié)果表明,該試驗(yàn)區(qū)土壤供氮、供磷、供鉀能力分別為80.9%、88.5%、97.6%。土壤供氮、磷能力為"中",供鉀能力為"高",氮素是該區(qū)高粱生產(chǎn)首要養(yǎng)分限制因子。2012年NPK較PK處理增產(chǎn)20.5%,與NK處理產(chǎn)量差異不顯著,2014年NPK分別較PK和NK處理增產(chǎn)26.9%和20.3%,2年間NPK與NP處理產(chǎn)量差異不顯著。NPK或NP配施可顯著提高高粱產(chǎn)量。不同施肥措施對N、P、K的吸收量以NPK和NP處理較高。施氮肥可顯著降低氮素收獲指數(shù),施磷肥和鉀肥對磷素和鉀素收獲指數(shù)無顯著影響。肥料農(nóng)學(xué)效率以磷肥最高,氮肥居中。肥料利用率以氮肥最高,磷肥最低。綜合不同施肥處理下的養(yǎng)分供應(yīng)能力、高粱產(chǎn)量、養(yǎng)分吸收量和利用率可知,本地區(qū)高粱施肥應(yīng)加強(qiáng)氮肥的合理投入,并注重磷肥的合理施用。
[Abstract]:In order to study the soil nutrient supply capacity of cinnamon soil in western Liaoning Province, a randomized block experiment was conducted in 2012 and 2014 to study the soil nutrient supply under different fertilization treatments. Changes of sorghum yield and nutrient uptake and utilization. The experiment included CK NPK PKNK and NP5 treatments. The results showed that the soil was supplied with nitrogen and phosphorus. The capacity of supplying potassium was 80.988. 5% and 97.66.The ability of supplying nitrogen and phosphorus was medium and the ability of supplying potassium was "high". Nitrogen was the main nutrient limiting factor in sorghum production in this area. In 2012, NPK increased 20. 5% compared with competition treatment, but there was no significant difference between NK treatment and NPK. In 2014, NPK increased by 26.9% and 20.3% respectively compared with competition and NK treatment. There was no significant difference in yield between NPK and NP in two years. NPK or NP combined application could significantly increase the yield of sorghum. The uptake of K was higher in NPK and NP treatments. The nitrogen harvest index was significantly decreased by applying nitrogen fertilizer, but the yield index was not significantly affected by the application of phosphorus and potassium fertilizer. The highest agronomic efficiency of fertilizer was phosphorus fertilizer. Nitrogen fertilizer in the middle. Fertilizer use efficiency of nitrogen fertilizer is the highest, phosphorus fertilizer is the lowest. Combined with different fertilization treatment of nutrient supply capacity, sorghum yield, nutrient uptake and utilization rate know. The rational input of nitrogen fertilizer and the rational application of phosphorus fertilizer should be strengthened in sorghum fertilization in this area.
【作者單位】： 遼寧省水土保持研究所;朝陽師范高等�？茖W(xué)校;朝陽市雙塔區(qū)種子管理站;
【基金】：國家高粱產(chǎn)業(yè)技術(shù)體系朝陽綜合試驗(yàn)站(CARS-06-04-03)
【分類號】：S158.3;S514
【正文快照】： 土壤肥力是決定土地生產(chǎn)力的基本條件,土壤養(yǎng)分供給能力是評價(jià)土壤肥力的重要指標(biāo),土壤供肥能力越高,作物越容易獲得持續(xù)高產(chǎn)和穩(wěn)產(chǎn)。施肥是影響土壤肥力、養(yǎng)分吸收利用和作物產(chǎn)量的重要措施。不同施肥措施還對土壤結(jié)構(gòu)和土壤可持續(xù)生產(chǎn)能力產(chǎn)生重要影響[1-3]。施肥的產(chǎn)量反應(yīng)

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