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中国农学通报

中国农学通报 ›› 2010, Vol. 26 ›› Issue (19): 155-160.

所属专题： 油料作物； 园艺

• 资源 环境 生态 土壤 气象 • 上一篇    下一篇

应用“3414”试验建立芜湖县油菜施肥指标体系

朱克保 吴传洲 奚波 陶光兵 孙义祥   

  • 收稿日期:2010-05-13 修回日期:2010-06-04 出版日期:2010-10-05 发布日期:2010-10-05
  • 基金资助:

    公益性行业科研专项“最佳养分管理技术研究与应用”

Establishing Fertilization Recommendation Index of Rapeseed in Wuhu County Based on the ‘3414’ Field Experiments

  • Received:2010-05-13 Revised:2010-06-04 Online:2010-10-05 Published:2010-10-05

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摘要：

应用“3414”试验结果建立磷、钾施肥技术指标体系。本研究以相对产量50%、75%、90%和95%为标准将安徽省芜湖县土壤有效磷、速效钾划分为极低、低、中、高和极高5级；并分别用一元二次和线性加平台模型对不同土壤养分分级范围内施肥量与产量关系进行模拟，计算最佳肥料用量。结果表明芜湖县土壤有效磷、速效钾含量处于极低等级（Olsen-P<10 mg/kg；NH4OAc-K<20 mg/kg）时，磷、钾肥（P2O5和K2O）用量分别应为75和65 kg/hm2；低等级（Olsen-P, 10-20 mg/kg; NH4OAc-K, 20-50 mg/kg）时，磷、钾肥用量为60和55 kg/hm2；中等级（Olsen-P, 20-30 mg/kg; NH4OAc-K, 50-100 mg/kg）时，磷、钾肥用量均为45 kg/hm2；高等级（Olsen-P, 30-50 mg/kg; NH4OAc-K, 100-125 mg/kg）时，磷、钾肥用量均为30 kg/hm2；当土壤有效磷高于40 mg/kg，速效钾高于125mg/kg 时，无需磷钾肥施用。区域总量控制的方法对氮肥进行推荐，推荐用量为180±30 kg/hm2。

关键词: 龙眼 冻害 分级, 龙眼 冻害 分级

Abstract:

Taking the rapeseed “3414” experiments in Wuhu county as an example, the process of establishing fertilization recommendation index was investigated and discussed. Soil Olsen-P and NH4OAc-K were classified as very low (<50% relative yield), low (50%-75% relative yield), medium (75%–90% relative yield), high (90%–95% relative yield) and very high (>95% relative yield) based on the relative yields. Fertilizer recommended rates were simulated by the models of one-factor or Linear-plateau model for each “3414” field experiment. The results indicate that phosphorus fertilizer rates (P2O5) are 65, 55, 45, 30, and 0 kg/ha when soil fertility are classified as very low, medium, high and very high (Olsen-P<10, 10–20, 20–30 30–40 and >40 mg/kg), respectively, while potassium fertilizer rates (K2O) are 75, 60, 45, 30, and 0 kg/ha(NH4OAc-K <20, 20–50, 50–100, 100–125 and >125mg/kg). The method of Regional Mean Optimal Application Rate of Chemical Fertilizer N is used for rapeseed, and the rate is 180±30 kg/ha.

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