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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (19): 166-169.

所属专题： 玉米

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

辽宁省玉米主产区农田土壤施肥状况调查

邢月华   

  • 收稿日期:2010-05-05 修回日期:2010-07-12 出版日期:2010-10-05 发布日期:2010-10-05
  • 基金资助:

    东北冷凉区一年一熟制高效施肥关键技术研究与示范;东北黑土及北方风沙盐碱土区沃土技术模式研究与示范;辽宁省玉米养分管理研究（IPNI项目）

Investigation of Fertilization on Corn in Main Production Regions of Liaoning Province

  • Received:2010-05-05 Revised:2010-07-12 Online:2010-10-05 Published:2010-10-05

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摘要：

2005年春季对辽宁省玉米主产区147个农户施肥状况进行了调查。结果表明，玉米主产区施用尿素、复合肥和磷酸二铵的样本比例分别为84.6%、80.3%和40.1%，有机肥施用比例仅占34.2%。从不同区域施肥量来看，尿素用量大致相同，磷酸二铵用量趋势为辽中北>辽西>辽南，复合肥用量趋势为辽中北>辽南>辽西，有机肥用量趋势为辽西>辽中北>辽南。全省玉米氮磷钾肥的平均用量分别为234.4 kg/hm2、104.8 kg/hm2和53.5kg/hm2，且氮磷钾的投入以化肥为主。不同区域氮磷钾肥用量不同，氮磷肥用量为辽中北>辽西>辽南，钾肥用量为辽南>辽中北>辽西。从玉米施肥氮磷钾的比例来看，各地均相对重视氮肥的施用，而磷、钾肥的比例相对偏低，尤其是钾肥的比例。不同产量水平的玉米养分施用量和氮磷钾比例结果表明，高产水平玉米的K肥用量和比例相对较高。

关键词: 牡丹, 牡丹, 导管, 形态特征

Abstract:

Fertilization investigation on corn was carried out in main production regions of Liaoning province.The results showed that the corn with Urea,Complex fertilizer, Diammonium phosphate and organic fertlizer were 84.6%, 80.3%, 40.1% and 34.2%, respectively.Seen from fertilizer rate in different regions , Urea rate was about same, Diammonium phosphate rate was north of Liaoning > west of liaoning > south of Liaoning, Complex fertilizer rate was north of Liaoning>south of Liaoning >west of liaoning, organic fertlizer rate was west of liaoning> north of Liaoning>south of Liaoning .The average N,P2O5 and K2O application rates on corn were 234.4 kg/hm2,104.8 kg/hm2 and 53.5kg/hm2 in Liaoning ,respectively. Most of the total fertilizer amount was from chemical fertilizer. N, P2O5 and K2O application rates were different in differet corn areas, N,and P2O5 application rates were north of Liaoning > west of liaoning >south of Liaoning, K2O application rates were south of Liaoning >north of Liaoning > west of liaoning . The ratio of P2O5 and K2O was low,especially K2O rate was too low. K2O application rates and ratio were high under high corn yield level.