苏州高产稻区氮肥的经济施用
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RATIONAL USE OF NITROGEN FERTILIZER FOR HIGH YIELDING RICE IN SUZHOU DISTRICT
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    摘要:

    苏州地区是我国有名的农业集约地区之一,一年二熟或三熟,每熟作物施用氮肥的次数多,数量大,估计每季水稻的氮肥施用量按纯氮计一般超过每亩20斤.所施入的氮肥,据15N标记的氮肥去向研究结果,损失达30-70%.常年如此大量的施用氮肥加上如此严重的损失,不能不影响到农业的增产增收,对该地区的农田生态系统也可能是个潜在威胁,值得重视并设法加以改进.

    Abstract:

    Suzhou district is one of the highly productive agricultural regions of intensive farming and high fertilizer imput.In the recent years,the rate of application of nitrogen fertilizets for each rice crop season in this region has attained an average above 150 kg.of N pet hectare which is believed to be the amount required by rice plants in order to get 7500 kg.of grain per hectare.It was showed by 15N-tracing experiments with the similar fertilizer application rates that the loss of fertilizer-N during tie growing season accounted for 30% to 70% of the fertilizer-N applied in this region,and some studies revealed that deep-dresing,granulation and appropriate timing of the application for nitrogen fertilizers seemed to be effective for increasing the efficiency of fertilizer-N in the rice field.

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陈荣业,孙秀廷,李阿荣,潘遵谱,陈全武,惠茂新.苏州高产稻区氮肥的经济施用[J].土壤学报,1983,20(4):373-386. Chen Rongye, Sun Xiuting, Li Arong, Pan Zunpu, Chen Qianwu, Wei Maoxing. RATIONAL USE OF NITROGEN FERTILIZER FOR HIGH YIELDING RICE IN SUZHOU DISTRICT[J]. Acta Pedologica Sinica,1983,20(4):373-386.

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  • 在线发布日期: 2013-02-25
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