[1]姚振镐,郑剑英,郝明德,等.渭北旱原夏谷及甘薯需肥量试验[J].水土保持研究,1985,(02):92-103.
YAO Zhengao,Zheng Jianying,Hao Mingde,et al.Trials to Determine Commercial Fertilizer Requirement of Summer Millet and Sweet Potato on the Weipei Dry High-plain, Shaanxi Province[J].Research of Soil and Water Conservation,1985,(02):92-103.
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YAO Zhengao,Zheng Jianying,Hao Mingde,et al.Trials to Determine Commercial Fertilizer Requirement of Summer Millet and Sweet Potato on the Weipei Dry High-plain, Shaanxi Province[J].Research of Soil and Water Conservation,1985,(02):92-103.
渭北旱原夏谷及甘薯需肥量试验
《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]
卷:
期数:
1985年02期
页码:
92-103
栏目:
出版日期:
1900-01-01
- Title:
- Trials to Determine Commercial Fertilizer Requirement of Summer Millet and Sweet Potato on the Weipei Dry High-plain, Shaanxi Province
- 摘要:
- 本文总结陕西渭北旱原中等肥力红土夏谷及甘薯氮、磷、钾化肥试验结果，氮（N）肥用量范围0-20斤/亩，磷（P2O5）、钾（K2O）肥用量为0-16斤/亩。用二次方程模型拟合并分别计算了经济最佳用量。建议的化肥用量夏谷为：尿素12斤+过磷酸钙（P2O512%）40斤+硫酸钾15斤/亩；甘薯为：尿素20斤+过磷酸钙75斤+硫酸钾15斤/亩.夏谷氮肥分两次施，1/3在拔节期，2/3在孕期，增产效果优于一次施用。甘薯施肥的经济效益高于夏谷。
- Abstract:
- In field trials in 1982-1983 millet and sweet potato were given respectively. N in the range 0-20 catty/mu, P2O5,K2OO in the range 0-16 catty /mu each. The results were analysed and quadratic equation determining optimum fertilizer application were derived. For maximum economic yield 12 catty urea+30 catty superphosphate (12% P2O5)+15 catty K2OSO4 per mu were recommended to millet and 20 catty urea+75 catty superphosphate+15 catty K2SO4 to sweet potato. Splitting of N fertilization of millet into 2 consecutive application, i.e. 1/3 at shooting, 2/3 at booting stage improved N efficiency. Comparison between net profit of millet fertilization and that of sweet potato showed fertilizing sweet potato was more profitable.
参考文献/References:
[1] J.D.Nielson, R elatio}ship between soil fertility and soil tests. In Development in Plant and Soil Science, Vol.lO, Efficient Use of Fertilizer in Agriculture, 1983, p97-107
更新日期/Last Update:
1900-01-01