中国玉米主产区土壤养分的空间变异及影响因素分析
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赵晴月,许世杰,张务帅,张哲,姚智,陈新平,邹春琴
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Spatial Regional Variability and Influential Factors of Soil Fertilities in the Major Regions of Maize Production of China
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ZHAO QingYue,XU ShiJie,ZHANG WuShuai,ZHANG Zhe,YAO Zhi,CHEN XinPing,ZOU ChunQin
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表2 我国玉米主产区各区域土壤养分含量差异
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Table 2 Soil fertilities in the major regions of maize production in China
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区域
Region | 样本量
Sample size | pH | 有机质
Organic matter (g·kg-1) | 全氮
Total N (g·kg-1) | 有效磷
Olsen-P (mg·kg-1) | 速效钾
Available K (mg·kg-1) | 中值
Median | 5%—95%置信区间
5%-95% confidence interval | 中值
Median | 5%—95%
置信区间
5%-95% confidence interval | 中值
Median | 5%—95%
置信区间
5%-95% confidence interval | 中值
Median | 5%—95%
置信区间
5%-95% confidence interval | 中值
Median | 5%—95%
置信区间
5%-95% confidence interval | | I-1 | 82 | 6.5 | 5.4—7.4 | 44.6 | 22.0—71.2 | 3.1 | 1.2—5.1 | 28.2 | 8.2—80.2 | 208.7 | 87.7—357.9 | | I-2 | 90 | 6.0 | 4.6—7.0 | 32.2 | 16.6—43.3 | 2.3 | 1.0—3.5 | 42.5 | 8.4—93.2 | 195.1 | 80.5—436.0 | | I-3 | 25 | 6.8 | 5.8—7.3 | 25.6 | 13.7—42.8 | 1.5 | 1.0—2.9 | 26.4 | 3.8—62.0 | 154.2 | 95.0—329.6 | | I-4 | 59 | 6.5 | 4.8—7.5 | 17.0 | 11.5—33.6 | 1.3 | 0.8—2.6 | 25.4 | 5.6—134.9 | 119.3 | 60.4—414.4 | 东北区 I
The region of the Northeast China I | 256 | 6.4 | 5.0—7.3 | 32.0 | 13.0—58.0 | 2.2 | 0.9—4.5 | 32.3 | 7.2—95.8 | 175.6 | 74.2—377.7 | | II-1 | 265 | 7.3 | 5.5—8.0 | 20.4 | 12.8—28.4 | 1.5 | 0.8—2.2 | 24.4 | 5.5—92.7 | 183.1 | 80.6—346.6 | | II-2 | 55 | 6.8 | 5.1—7.3 | 20.3 | 11.2—27.4 | 1.4 | 0.7—2.1 | 20.7 | 5.2—70.7 | 154.0 | 52.2—324.7 | 华北区II
The region of the North China Plain II | 320 | 7.2 | 5.4—7.9 | 20.3 | 12.7—28.3 | 1.4 | 0.8—2.2 | 23.6 | 5.3—86.8 | 176.2 | 72.6—345.4 | | III-1 | 92 | 7.6 | 6.6—8.0 | 17.4 | 10.7—32.0 | 1.3 | 0.7—2.3 | 15.2 | 4.0—46.5 | 171.6 | 103.3—316.3 | | III-2 | 110 | 7.5 | 6.9—8.1 | 17.0 | 6.6—34.6 | 1.2 | 0.5—2.6 | 18.1 | 4.2—64.6 | 138.2 | 44.8—323.2 | | III-3 | 20 | 7.2 | 6.6—7.5 | 17.4 | 10.2—40.4 | 1.2 | 0.6—3.0 | 8.6 | 1.9—55.2 | 385.6 | 201.8—832.5 | 西北区III
The region of the Northwest China III | 222 | 7.5 | 6.8—8.0 | 17.2 | 8.1—33.2 | 1.2 | 0.6—2.4 | 16.2 | 4.2—61.0 | 162.5 | 63.0—398.1 | | IV-1 | 33 | 6.6 | 5.1—7.0 | 13.6 | 7.5—27.4 | 1.1 | 0.5—2.0 | 9.3 | 0.5—54.5 | 132.9 | 54.2—313.9 | | IV-2 | 92 | 6.4 | 4.5—7.4 | 21.8 | 11.8—42.7 | 1.6 | 0.8—3.4 | 18.2 | 1.7—93.6 | 138.8 | 46.8—334.0 | | IV-3 | 57 | 6.4 | 4.6—7.7 | 31.6 | 13.4—72.7 | 2.3 | 0.9—4.6 | 28.5 | 3.3—96.8 | 162.0 | 63.2—377.0 | 西南区IV
The region of the Southwest China IV | 182 | 6.4 | 4.6—7.4 | 22.4 | 10.5—53.6 | 1.6 | 0.7—3.8 | 18.3 | 1.9—94.5 | 141.8 | 49.2—340.4 |
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