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不同養(yǎng)分投入的各品種小麥產(chǎn)量及養(yǎng)分效率差異研究
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國(guó)家自然科學(xué)基金資助項(xiàng)目(30871596,、30971866);西北農(nóng)林科技大學(xué)“創(chuàng)新團(tuán)隊(duì)建設(shè)計(jì)劃”資助項(xiàng)目


Use Efficiency of Different Winter Wheat Cultivars Response to Different Nutrient Inputs
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    摘要:

    選用6個(gè)冬小麥品種,通過(guò)田間試驗(yàn)研究了不同養(yǎng)分投入水平的小麥產(chǎn)量及養(yǎng)分效率的差異,。結(jié)果表明,,隨養(yǎng)分投入水平的提高,小麥產(chǎn)量和生物量均明顯增加,,高產(chǎn)品種對(duì)養(yǎng)分投入的敏感程度明顯高于低產(chǎn)品種,。從產(chǎn)量構(gòu)成分析,低養(yǎng)分投入時(shí),,小麥每公頃穗數(shù)及穗粒數(shù)對(duì)產(chǎn)量起決定作用,;高養(yǎng)分投入時(shí),產(chǎn)量取決于每公頃穗數(shù),。從兩年不同養(yǎng)分投入水平的平均值來(lái)看,,低養(yǎng)分投入時(shí),高產(chǎn)品種氮肥回收率,、農(nóng)學(xué)效率和偏生產(chǎn)力比低產(chǎn)品種高6.3%~61.6%,、52.1%~122%、9.8%~25%,;磷肥回收率,、農(nóng)學(xué)效率和偏生產(chǎn)力較低產(chǎn)品種高31.2%~33.3%,、58.9%~126.3%、7.0%~24.9%,。高養(yǎng)分投入時(shí),,小麥偏生產(chǎn)力明顯下降,且低產(chǎn)品種較高產(chǎn)品種更敏感,。

    Abstract:

    Six main winter wheat cultivars planted in Shaanxi Province were used as test crops to study their differences in yield and nutrient use efficiency at different nutrient inputs by a two-year field experiment in Northwest China. The obtained results showed that winter wheat yield and biomass increased significantly with the increase of nutrient inputs, and the high-yielding varieties were more sensitive to the nutrient inputs than the low-yielding varieties. Analyzing yield components revealed that, in the low nutrient inputs condition, the yield depended on panicles per unit area and grain number per spike, but panicles per unit area dominated the yield in high nutrient inputs condition. In the low nutrient inputs condition, nitrogen recovery efficiency, agronomic use efficiency and partial factor productivity of the high-yielding varieties were 6.3%~61.6%, 52.1%~122% and 9.8%~25% respectively, higher than those of the low-yielding varieties. Phosphorus recovery efficiency, agronomic use efficiency and partial factor productivity of the high-yielding varieties were 31.2%~33.3%, 58.9%~126.3%, 7.0%~24.9% respectively, higher than those of the low-yielding varieties. Nitrogen and phosphorous partial productivity significantly decreased with the increase of nutrient inputs, and the low-yielding varieties were more sensitive to fertilization input than the high-yielding varieties.

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昝亞玲,王朝輝,周玲,戴健.不同養(yǎng)分投入的各品種小麥產(chǎn)量及養(yǎng)分效率差異研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(9):91-98. Zan Yaling, Wang Zhaohui, Zhou Ling, Dai Jian. Use Efficiency of Different Winter Wheat Cultivars Response to Different Nutrient Inputs[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(9):91-98.

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  • 在線(xiàn)發(fā)布日期: 2012-09-04
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