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单季晚稻施用长效碳酸氢铵效果研究

The Fertilizer Efficiency of Controlled Release Ammonium Bicarbonate of Single-season Rice in Songjiang
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摘要 实验室模拟试验和田间试验结果表明,表施和混施长效碳铵较普通碳铵可在一定程度上减少氨的挥发损失;长效碳铵有一定的硝化抑制作用;长效碳铵施用量比经验施肥量减少195kg/hm2时,水稻产量不下降;采用二次曲线校正方程y=a+bxk+cx2k,能更准确地模拟碳铵肥料效应特征,对长效碳铵取k=1.1、普通碳铵k=1.2、二者在达到基本一致的最高产量时,长效碳铵的每公顷施用量比普通碳铵节省约70kg。 The good fertilizer efficiency of controlled release ammonium bicarbonate on single-season rice in blue-violet mud in Songjiang county was presented. The results of laboratory and field trials showed as follows: The volatilization of ammonium bicarbonate was reduced to some extent than that of common ammonium bicarbonate while fertilizer was applied on the surface or mixed with soil; the controlled release ammonium bicarbonate reduced nitrification to some extent; there was no rice yield difference between application of 900kg/hm 2 controlled release ammonium bicarbonate and 1095kg/hm 2 common ammonium bicarbonate; justified regression curve equation of y=a+bx k+cx 2k was adopted ,it can simulate the charateristic of fertilizer efficiency accarately; for controlled release ammonium bicarbonate k=1.1 and common ammonium bicarbonate k=1.2, the optimum yield would be obtained, and the applied amount might save controlled release ammonium bicarbonate of 70kg/hm 2 less than common fertilizer.
出处 《中国农学通报》 CSCD 1998年第6期17-19,共3页 Chinese Agricultural Science Bulletin
关键词 单季晚稻 长效碳酸氢铵 碳酸氢铵 肥效 晚稻 Controlled release ammonium bicarbonate\ Common ammonium bicarbonate\ Fertilizer efficiency\ Rice\ Blue-violet mud
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  • 1曹志洪,孙秀廷,蒋佩弦,李阿荣,李庆逵.长效碳酸氢铵的研究[J]土壤学报,1980(02).

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