| 1. | Spore density was affected by soil olsen - p content and ph
农田土壤中速效磷含量、 ph对孢子密度的影响较大。 |
| 2. | Soil ca leaches easily after fire . then soil ca can returned to level before burning gradually
火烧迹地土壤速效磷含量的变化与全磷有大致的趋势。 |
| 3. | And the organic p content o soil covered with plastic film changed little compared with that in nakedness soil
地膜覆盖明显减少了速效磷的含量，增加了磷的移出量。 |
| 4. | Either neutral phosphatase or alkaline phosphatase had significant positive relations to soil o . m , po and avail
无论是中性磷酸酶还是碱性磷酸酶都与有机质、有机磷和速效磷有着显著的正相关关系。 |
| 5. | Partial correlation also showed there was closer relation for avail . p to po than that to pi in tested soils . 4
从偏相关系数分析，土壤速效磷与有机磷的相关关系要比与无机磷的相关关系更为密切。 |
| 6. | The distribution patterns of total phosphate , available phosphate , available iron follow lognormal and others normal distribution . 3
在分布类型上，除全磷、速效磷、有效铁服从对数正态分布外，其余全为正态分布。 |
| 7. | The yearly burning raised soil pll , available n and k and reduced soil organic mater , total n , total p , available p and ca
连年火烧迹地土壤ph值升高，有机质、全氮、全磷、速效磷、钙的含量均有所下降，而有效氮、有效钾的含量有所增加。 |
| 8. | ( 5 ) compared with virgin land , the soil organic matter , total n , total p , total k , slowly released k and available n of alfalfa land increased at different degree
( 5 )首蓓地较荒地相比，土壤有机质、全n 、全p 、全k 、缓效k和碱解n都有不同程度的增加，速效磷和速效钾则下降较多。 |
| 9. | Soil pollution index and olsen - p content were more closely related to species diversity in polluted soil , while ph and olsen - p content were more closely related to spore den sity
重金属污染土壤中，综合污染指数和速效磷含量是影响种的丰度的主要因素，土壤ph值与重金属综合污染指数是影响孢子密度的主要因素。 |
| 10. | There was obvious dependence relationship between corn yields with changing of depth of cultivated horizon and available water content , corn yields of the corn belt phaeozem changed regularly
相关分析表明， “平面型”界面土壤玉米产量与各养分含量间无明显相关关系，只有当速效磷、钾含量在五级以下时，产量才受到明显影响。 |
