CN1920557A - Black earth fertility evaluation index system - Google Patents
Black earth fertility evaluation index system Download PDFInfo
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- CN1920557A CN1920557A CN 200510017059 CN200510017059A CN1920557A CN 1920557 A CN1920557 A CN 1920557A CN 200510017059 CN200510017059 CN 200510017059 CN 200510017059 A CN200510017059 A CN 200510017059A CN 1920557 A CN1920557 A CN 1920557A
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Abstract
The invention relates to a method for using classical statistic to research fertility evaluation index of black soil area of HeiLongJiang province, and relative evaluation method, wherein it can research and screen relative indexes of the fertility of black soil; it uses SAS software program data to analyze collected black soil sample; then based on the main element analyzed data, calculating out the black soil fertility character valve F; based on the volumes of F, it can be divided into 5 levels, to evaluate the fertility of black soil area reasonably.
Description
Technical field
The invention belongs to field of agricultural production technologies, is a kind of black earth fertility evaluation index system.
Technical background
Northeast black earth is one of the world's three large stretch of black earth, mainly is distributed in Heilungkiang and Jilin two provinces, and about 1,000 ten thousand hectares of area is main commodity food of China and livestock products base.In the total cultivated area, Heilongjiang Province, black earth accounts for 43% greatly, is the comparison fertile soil.This is a kind of saying qualitatively, lacks the support of the evaluation index of science.Since various to the mode that soil resource is utilized, utilize some specific indexs to estimate quite difficulty of soil fertility.Larson and Pierce (1991) have proposed to be used to control the soil erosion or to prevent surface water and the index of groundwater contamination: the soil texture, structure and intensity, the effective water of plant and maximum working depth are phytometer; Available nutrient, full carbon, unstable organic carbon, PH and electrolysis conductivity are chemical index.
Zhao Qiguo etc. (1997) point out in soil quality and lasting Environmental Studies, for a long time, scientist thinks that mostly human activity mainly causes the quality degradation of air and water resource, and few people recognize that soil quality also can under different utilizations and management condition serious degradation take place.Several years up to date, about soil quality in continue producing effect and and plant, human health between relation, just constantly come into one's own.Particularly in concrete production practices, people begin to recognize that soil quality is a kind of the most responsive method of indicating the edaphic condition dynamic change, and it can reflect the variation of soil management, also can reflect the ability that soil restoration is degenerated.On this understanding basis, the U.S. has held two scientific seminars about the soil quality problem continuously at 1991 and 1992, and has delivered a series of articles just.
Sun Bo etc. point out that the evaluation method of soil fertility resource is a lot of in comprehensive evaluation one literary composition of mountain area, hills, China southeast soil fertility, selected evaluation index is also inconsistent.Evaluation method is in the past thought the quantity rank of dividing the fertility evaluation index and the weight coefficient of each index mostly, utilizes the height of simple addition, the synthetic comprehensive index evaluation soil fertility of multiplication then.The general evaluation index is divided into three levels, and ground floor is the overall target of soil fertility; Comprise separate two in the second layer, the situation of an expression soil nutrient, residing physics and chemical environmental conditions during another expression soil supply plant nutrient; The 3rd layer is cross one another individual event fertility index.
The present invention only proposes some evaluation indexes with regard to northeast black earth, and agricultural production has important directive significance to black soil region.
Summary of the invention
The present invention mainly is by collection, test analysis to the black soil region 0-20cm660 of a Heilongjiang Province sampling point, uses the method for classical theory of statistics principal component analysis (PCA) 8 nutrient indexs of farmland black earth are analyzed, and simultaneously the black soil region fertility property is estimated.Choose major component according to the accumulation contribution rate, can choose the first five major component.The quantity of information that the first five major component comprised accounts for 93.09% of overall information amount.
From standard deviation, first principal component (Z
1) be equivalent to 2.5 information that original index reflected approximately.The contribution rate of first principal component is 48.43%, that is to say, full phosphorus, alkali-hydrolyzable nitrogen, full nitrogen, full carbon, this five indices of carbon-nitrogen ratio have important effect in the fertility index evaluation.Above-mentioned five indices can reflect half of whole nutrients in first principal component; Second principal component, (Z
2) be equivalent to 0.48 information that original index reflected approximately.The contribution rate of Second principal component, is 16.89%, can reflect 16.89% of full detail amount; The 3rd major component (Z
2) be equivalent to 0.14 information that original index reflected approximately.The contribution rate of the 3rd major component is 10.83%, can reflect 10.83% of full detail amount; The 4th major component (Z
2) be equivalent to 0.10 information that original index reflected approximately.The contribution rate of the 4th major component is 9.08%, can reflect 9.08% of full detail amount; The 5th major component (Z
2) be equivalent to 0.29 information that original index reflected approximately.The contribution rate of the 5th major component is 7.86%, can reflect 7.86% of full detail amount.
The communality of the every fertility index of table 1 and the eigenwert of major component and contribution rate
| Fertility index | First principal component | Second principal component, | The 3rd major component | The 4th major component | The 5th major component |
| The complete full carbon carbon-nitrogen ratio of the full potassium alkali-hydrolyzable nitrogen of the phosphorus full nitrogen of available potassium available phosphorus characteristic value accumulation contribution rate/% standard deviation | 0.4266 -0.1788 0.4125 0.1765 0.0375 0.4634 0.4893 0.3595 3.8741 48.43 2.5229 | 0.2744 0.5222 -0.0391 0.3240 0.7170 -0.0014 -0.0645 -0.1653 1.3513 65.32 0.4846 | 0.2281 0.3305 -0.0146 -0.8959 0.1013 0.0972 0.1089 0.0663 0.8667 76.15 0.1399 | -0.0324 0.7448 -0.0300 0.2325 -0.5864 0.0495 0.1117 0.1744 0.7268 85.24 0.0983 | 0.0340 -0.0598 -0.4420 0.0393 0.1761 -0.3407 0.0233 0.8067 0.6284 93.09 0.2876 |
With 660 sampling point soil samples of the black soil region 0-20cm that measured, utilize the SAS software program, data are carried out principal component analysis (PCA) (seeing Table 1), then according to principle component analysis data, obtain black soil fertility characterization value F value, according to table 1, can obtain:
Y
Z1＝X
1×0.4266+X
2×(-0.1788)+…+X
8×0.3595
Y
Z2＝X
1×0.2744+X
2×0.5222+…+X
8×(-0.1653)
… …
… …
Y
Z5＝X
1×0.0340+X
2×(-0.0598)+…+X
8×0.8067
By the contribution rate value in above equation and the table 1, can obtain the F value, see Table 2:
F=Y
Z1* 48.43% (Z
1Contribution rate)+Y
Z2* 16.89% (Z
2Contribution rate)+... + Y
Z5* 7.85% (Z
5Contribution rate)
Can carry out comprehensive evaluation to black soil fertility by the F value, the classification of black earth soil fertility is had certain directive significance.
The classification of table 2 black soil fertility grade
| Number of samples | F value scope | The land productivity grade | The land productivity situation | The ratio that sampling point accounts for (%) |
| 83 191 161 143 79 | ＞1 0-1 -0.5-0 -1--0.5 ＜-1 | 1 2 3 4 5 | The relatively poor fertility of the more fat power medium fertility of the most fat power of fertility is the poorest | 12.63 29.07 24.51 21.77 12.02 |
According to the size of F value, we are divided into 5 grades with it, and wherein the F value is＞1, are decided to be the most fertilely, and 83 sampling points are arranged, and account for 12.63% of total sampling point; The F value is between the 0-1, is decided to be fertilizer, and 191 sampling points are arranged, and accounts for 29.07% of total sampling point; The F value is-between the 0.5-0, be decided to be middle fertility, 161 sampling points are arranged, account for 24.51% of total sampling point; The F value is-between the 1--0.5, it is relatively poor to be decided to be fertility, and 143 sampling points are arranged, and accounts for 21.77% of total sampling point; The F value is＜-1, and it is the poorest to be decided to be fertility, and 79 sampling points are arranged, and accounts for 12.02% of total sampling point.
Embodiment
The present invention 2003-2005, in the Chinese Academy of Sciences of Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sc knowledge innovation major project (KZCX1-SW-19-3-01), use, effect is remarkable, meet the requirement of agricultural production practice, to soil testing and fertilizer recommendation, applying fertilizers scientifically has important directive significance, and the agricultural production of whole black soil region is had very important theory significance and realistic meaning; Government department has certain realistic meaning to macro adjustments and controls, the decision-making of farmland black soil fertility proterties simultaneously.
Claims (1)
1. a fertility evaluation index system is characterized in that utilizing the SAS software program to analyze the soil sample data of measuring in the black soil region, obtains black soil fertility characterization value F (tentatively titled), estimates the index of black soil fertility: F＞1 with this, and is the most fertile; 0＞F＞1, better;-0.5＞F＞0, middle fertility;-0.5＞F＞-1, fertility is relatively poor; F＜-1, fertility is the poorest.
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| CN 200510017059 CN1920557A (en) | 2005-08-22 | 2005-08-22 | Black earth fertility evaluation index system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510017059 CN1920557A (en) | 2005-08-22 | 2005-08-22 | Black earth fertility evaluation index system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419218B (en) * | 2008-12-02 | 2011-12-28 | 中国农业科学院农业资源与农业区划研究所 | Method for correcting graded index of soil nutrient |
| CN107064455A (en) * | 2017-02-28 | 2017-08-18 | 西北农林科技大学 | A kind of fat power evaluation method in natural pond |
| CN107561242A (en) * | 2017-08-29 | 2018-01-09 | 山西省环境科学研究院 | A kind of evaluation method of combined pollution agricultural land soil quality |
| CN110998405A (en) * | 2017-08-11 | 2020-04-10 | 宁波舜宇光电信息有限公司 | Optical lens, camera module and assembling method thereof |
| CN112763690A (en) * | 2020-12-29 | 2021-05-07 | 北京嘉博文生物科技有限公司 | Soil fertility evaluation method |
-
2005
- 2005-08-22 CN CN 200510017059 patent/CN1920557A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101419218B (en) * | 2008-12-02 | 2011-12-28 | 中国农业科学院农业资源与农业区划研究所 | Method for correcting graded index of soil nutrient |
| CN107064455A (en) * | 2017-02-28 | 2017-08-18 | 西北农林科技大学 | A kind of fat power evaluation method in natural pond |
| CN110998405A (en) * | 2017-08-11 | 2020-04-10 | 宁波舜宇光电信息有限公司 | Optical lens, camera module and assembling method thereof |
| CN107561242A (en) * | 2017-08-29 | 2018-01-09 | 山西省环境科学研究院 | A kind of evaluation method of combined pollution agricultural land soil quality |
| CN107561242B (en) * | 2017-08-29 | 2020-03-24 | 山西省环境科学研究院 | Evaluation method for quality of soil of compound contaminated farmland |
| CN112763690A (en) * | 2020-12-29 | 2021-05-07 | 北京嘉博文生物科技有限公司 | Soil fertility evaluation method |
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