不同栽培技术因子对雨养春玉米产量与氮素效率差异的影响
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曹玉军,姚凡云,王丹,吕艳杰,刘小丹,王立春,王永军,李从锋
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Effects of Different Agronomy Factors on Yield Gap and Nitrogen Efficiency Gap of Spring Maize Under Rain-Fed Conditions
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CAO YuJun,YAO FanYun,WANG Dan,LÜ YanJie,LIU XiaoDan,WANG LiChun,WANG YongJun,LI CongFeng
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表1 不同模式的种植密度、耕作方式与肥料运筹
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Table 1 Plant density, cultivation patters and fertilizer application under different technique modes
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技术模式
Technique
mode | 种植密度
Planting density
(×104 plants/hm2) | 耕作方式
Tillage method | 肥料
Fertilizer | 总用量
Total amount
(kg·hm-2) | 肥料施用时期和施用比例 Fertilizer application period and application ratio | 播前
Before sowing | 拔节
Jointing stage | 大喇叭口期
Bell stage | 吐丝期
Silking stage | | FP | 6.0 | 浅旋15 cm
Shallow rotary
(15 cm) | 氮肥N | 270 | 100% | – | – | – | | 磷肥P2O5 | 120 | 100% | – | – | – | | 钾肥K2O | 120 | 100% | – | – | – | | HH | 7.5 | 深松/深翻
Deep tillage | 氮肥N | 225 | 20% | 30% | 30% | 30% | | 磷肥P2O5 | 120 | 100% | – | – | – | | 钾肥K2O | 120 | 100% | – | – | – | 有机肥
Organic fertilizer | 15000 | 100% | – | – | – | | SH | 9.0 | 深松/深翻
Deep tillage | 氮肥N | 360 | 40% | 30% | – | 30% | | 磷肥P2O5 | 120 | 100% | – | – | – | | 钾肥K2O | 120 | 100% | – | – | – | 有机肥
Organic fertilizer | 15000 | 100% | – | – | – |
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