Topic: different nitrogen fixation ratio giant eucalyptus plantation + red tsubaki soil and water conservation benefit evaluationPick to: taking sichuan zhongnan different annual giant eucalyptus plantation as the research object， set up different nitrogen fixation ratio giant eucalyptus plantation + red tsubaki runoff plots， observation of soil moisture and nutrients loss situation， observation period runoff variety range for 245 ~ rescue were 55 L/m2， each element n-application rates change range for C: 9 ~ 110 mg/L * m2， K: 7 ~ 7 mg/L * m2， Fe: 4 ~ 1 mg/L * m2， Ca: 27 ~ 7 mg/L * m2， mg: 14 ~ formed 56 mg/L * m2， Zn， mg/L 132 ~ 8 * m2， Mn: 5 ~ 3 mg/L * m2， Cu: 4 ~ 6 mg/L * m2， the results show that different surface runoff and runoff field of soil nutrient loss both showed mixed mixed messages to instruct the hundredth mixed < < pointing "mixed" giant eucalyptus pure forest < red tsubaki pure forest rule， explain when giant eucalyptus number in mixed accounted for 60% ~ points in 80%， the eucalyptus + red tsubaki plantation soil and water conservation benefit of the Keywords: giant eucalyptus plantation red soil nutrient and soil and water conservation benefit changchun 二楼错得离谱
Topic: different ratio of mixed plantations of Eucalyptus grandis + toon evaluation of soil and water conservation benefits Abstract: Sichuan hilly area of South Africa annual study of Eucalyptus grandis plantation， create a different ratio of mixed plantations of Eucalyptus grandis + toon runoff plots， observed the loss of soil moisture and nutrient status， observed during the runoff varied from 45 to 55L/m2， loss of the elements ranges from C: 9 ~ 110 mg / L * m2， K: 7 ~ 7mg / L * m2， Fe: 4 ~ 1mg / L * m2， Ca: 27 ~ 7 mg / L * m2， Mg: 4 ~ 6mg / L * m2， Zn: 2 ~ 8mg / L * m2， Mn: 5 ~ 3mg / L * m2， Cu: 4 ~ 6mg / L * m2， The results show that the different runoff of surface runoff volume and soil nutrient loss showed mixed ≈ 6:4 8:2 mixed <4:6 mixed <2:8 mixed
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