华北地区夏玉米滴灌施肥的肥料效应
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李格,白由路,杨俐苹,卢艳丽,王磊,张静静,张银杰
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Effect of Drip Fertigation on Summer Maize in North China
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LI Ge,BAI YouLu,YANG LiPing,LU YanLi,WANG Lei,ZHANG JingJing,ZHANG YinJie
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表1 供试土壤基础化学性质
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Table 1 Soil basic chemical properties
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土层
Soil layer
(cm) | 硝态氮
NO3--N (mg·L-1) | 铵态氮
NH4+-N (mg·L-1) | 有效磷
Available phosphorus
(mg·L-1) | 有效钾
Available potassium
(mg·L-1) | 碱溶
有机质
OM
(%) | 有效硫
Available sulphur
(mg·L-1) | 有效硼
Available boron
(mg·L-1) | 有效铁
Available iron (mg·L-1) | 有效锰Available manganese
(mg·L-1) | 有效铜Available copper (mg·L-1) | 有效锌Available zinc (mg·L-1) | 有效钙Available
calcium (mg·L-1) | 有效镁Available magnesium (mg·L-1) | | 0-20 | 21.8 | 12.9 | 22.7 | 96.4 | 0.75 | 17.2 | 2.9 | 5.3 | 12.8 | 0.9 | 3.5 | 1788.4 | 139.4 | | 20-40 | 21.7 | 10.2 | 8.5 | 60.3 | 0.69 | 41.5 | 2.4 | 6.3 | 12.8 | 0.8 | 1.9 | 1862.1 | 131.2 |
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