摘要
通过田间试验,建立了黑土区大豆-春玉米轮作条件下春玉米的肥料效应函数,得到该条件下春玉米的最大利润产量为11408.7 kg hm-2,氮、磷、钾肥料的推荐施肥量分别为N 167.0 kg hm-2、P2O5 45.0 kg hm-2、K2O 37.5 kg hm-2,N∶P2O5∶K2O=1∶0.27∶0.22。结果还表明,氮肥对玉米的增产作用远大于磷钾肥。该试验结果可以为东北黑土区大豆-春玉米轮作条件下春玉米的平衡施肥提供参考依据。
By means of field experiment,a nutrient rate-yield response function of spring corn was established under the soybean-spring corn rotation conditions,by which a maximum economic yield of 11408.7 kg hm-2 was obtained,and the optimal nitrogen,phosphorus and potassium rates were 167.0 kg hm-2,P2O5 45.0 kg hm-2 and K2O 37.5 kg hm-2 respectively,the ratio of N∶P2O5∶K2O was 1∶0.27∶0.22.The results also showed that nitrogen increased yield much more than either phosphorus or potassium did.This result can provide reference data for the balanced fertilization of spring corn under the soybean-spring corn rotation conditions in the Mollisols soil（Typic Cryoboroll） in Northeastern part of China.
出处
《土壤通报》
CAS
CSCD
北大核心
2010年第5期1142-1145,共4页
Chinese Journal of Soil Science
基金
科技部"十一五"科技支撑计划重大项目<东北平原北部(黑龙江)春玉米丰产高效技术集成研究与示范>(2006BAD02A11)
黑龙江省科技攻关项目<黑龙江省玉米单产限制性因子的研究>(GA07B101A9)资助
关键词
玉米-大豆轮作
推荐施肥量
Corn-soybean rotation
Recommended nutrient rate
