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Position: Home > Articles > Study on Plastic-film corn phosphorus nutrient balance experiments in Pengyang County JOURNAL OF NINGXIA AGRICULTURE AND FORESTRY SCIENCE AND TECHNOLOGY 2016,57 (6) 5-7+19

彭阳县地膜玉米磷素养分平衡定位试验研究

作  者:
火勇
单  位:
宁夏彭阳县农业技术推广服务中心
关键词:
地膜玉米;磷养分:平衡定位;研究
摘  要:
通过5年磷养分平衡定位试验结果表明:彭阳县中部河谷残塬区种植地膜玉米磷肥最佳施用量,黑垆土基施纯N268.1 kg/hm~2、P_2O_5 117.0 kg/hm~2、K_2O 75 kg/hm~2,平均产量最高为9 513.0 kg/hm~2,模拟寻优得出地膜玉米产量与有效施磷量回归方程,最高产量施磷量157.5 kg/hm~2,经济产量施磷量136.5 kg/hm2,磷肥当季利用率最高为11.6%,土壤磷素养分校正系数0.66,过量施磷肥磷素在土壤中能够积累,当磷平衡量为60.0 kg/hm~2,玉米收获后的土壤有效磷含量与试验前达到平衡。
译  名:
Study on Plastic-film corn phosphorus nutrient balance experiments in Pengyang County
作  者:
HUO Yong;Pengyang County Agro-Tech Extension and Service Center;
关键词:
Plastic-film corns;;Phosphorus nutrients;; Balanced position;;Study
摘  要:
The five years of phosphorus nutrient balance experiments showed that the best fertilizing for plastic-film corns in central valley tableland area in Pengyang County was nitrogen 268.1 kg/hm~2, pure P_2O_5 117.0 kg/hm~2, K_2O 0.75 kg/hm~2, with highest average yield of 9 512.0 kg/hm~2. Regression equation of plastic-film corn yield and effective rate of fertilization was simulated, with the highest yield rate of 157.5 kg/hm~2, Economic yield of fertilization was 136.5 kg/hm~2, the highest phosphate fertilizer utilization rate was 11.6%, soil p nutrient correction coefficient was 0.66. Excessive phosphorus was able to accumulate in the soil, with phosphorus balance quantity was 60.0 kg/hm~2, soil effective phosphorus content after corn harvest reached balance with that before the experiment.

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