我国冬油菜典型种植区域土壤养分现状分析
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任涛,郭丽璇,张丽梅,杨旭坤,廖世鹏,张洋洋,李小坤,丛日环,鲁剑巍
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Soil Nutrient Status of Oilseed Rape Cultivated Soil in Typical Winter Oilseed Rape Production Regions in China
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Tao REN,LiXuan GUO,LiMei ZHANG,XuKun YANG,ShiPeng LIAO,YangYang ZHANG,XiaoKun LI,RiHuan CONG,JianWei LU
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表3 我国冬油菜典型种植区域土壤养分丰缺状况
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Table 3 Soil nutrients deficiency status in typical winter oilseed rape production regions in the Yangtze River Basin
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参数
Parameters | 分级
Grading | 分布频率 Frequency (%) | | 长江上游 Upper YRB | 长江中游 Middle YRB | 长江下游 Lower YRB | 区域 YRB | 有机质
Organic matter
(g·kg-1) | >40 | 1级 Grade 1 | 23.1 | 9.0 | 13.2 | 14.0 | | 30-40 | 2级 Grade 2 | 13.1 | 24.8 | 11.8 | 18.9 | | 20-30 | 3级 Grade 3 | 30.8 | 26.1 | 31.6 | 28.5 | | 10-20 | 4级 Grade 4 | 31.5 | 36.5 | 38.2 | 35.3 | | 6-10 | 5级 Grade 5 | 0.8 | 2.7 | 5.3 | 2.6 | | <6 | 6级 Grade 6 | 0.8 | 0.9 | 0.0 | 0.7 | 全氮
Total N
(g·kg-1) | >2.0 | 1级 Grade 1 | 23.1 | 18.0 | 14.5 | 18.9 | | 1.5-2.0 | 2级 Grade 2 | 21.5 | 21.6 | 25.0 | 22.2 | | 1.0-1.5 | 3级 Grade 3 | 34.6 | 32.0 | 34.2 | 33.2 | | 0.75-1.0 | 4级 Grade 4 | 16.2 | 15.3 | 19.7 | 16.4 | | 0.5-0.75 | 5级 Grade 5 | 2.3 | 7.7 | 5.3 | 5.6 | | <0.5 | 6级 Grade 6 | 2.3 | 5.4 | 1.3 | 3.7 | 速效磷
Available-P
(mg·kg-1) | >30 | 1级 Grade 1 | 30.8 | 28.1 | 32.9 | 29.8 | | 25-30 | 2级 Grade 2 | 4.6 | 4.0 | 7.9 | 4.9 | | 12-25 | 3级 Grade 3 | 34.6 | 34.8 | 15.8 | 31.4 | | 6-12 | 4级 Grade 4 | 20.8 | 17.4 | 25.0 | 19.8 | | <6 | 5级 Grade 5 | 9.2 | 15.6 | 18.4 | 14.2 | 速效钾
Available-K
(mg·kg-1) | >180 | 1级 Grade 1 | 26.2 | 20.5 | 19.7 | 22.1 | | 135-180 | 2级 Grade 2 | 15.4 | 11.2 | 21.1 | 14.2 | | 60-135 | 3级 Grade 3 | 43.8 | 57.1 | 46.1 | 51.2 | | <60 | 4级 Grade 4 | 14.6 | 11.2 | 13.2 | 12.6 | | pH | >7.5 | 1级 Grade 1 | 24.6 | 17.0 | 22.4 | 20.2 | | 6.5-7.5 | 2级 Grade 2 | 16.2 | 13.4 | 10.5 | 13.7 | | 5.5-6.5 | 3级 Grade 3 | 24.6 | 21.9 | 26.3 | 23.5 | | <5.5 | 4级 Grade 4 | 34.6 | 47.8 | 40.8 | 42.6 |
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