Pollution year

Fertilizer input density

Pesticide input density

Straw production amount per unit area

Livestock and poultry excretion density

1992

196.6483

5.363328

6006

16317

1993

213.34

5.718126

6196.5

17436.07

1994

223.8186

6.6011

6094.5

19099.46

1995

239.7729

7.252796

6360

20602.14

1996

251.2065

7.486596

6724.5

17212.13

1997

258.5387

7.764319

6565.5

18119.34

1998

262.2704

7.910436

6753

19106.22

1999

263.7479

8.451726

6739.5

19527.28

2000

265.285

8.186399

6391.5

19904.44

2001

273.1911

8.187255

6400.5

20099.27

2002

280.6212

8.479676

6598.5

20753.14

2003

289.4467

8.694855

6499.5

21826.03

2004

301.9553

9.026408

6931.5

22331.46

2005

306.5322

9.389455

6963

22827.04

2006

313.8251

9.789181

7117.5

22448.14

2007

332.834

10.57471

7122

18007.86

2008

335.2623

10.70138

7426.5

17962.21

2009

340.6691

10.77287

7305.828

18119.37

2010

346.1464

10.94272

7460.362

17919.74

2011

351.4966

11.01161

7748.836

17462.77