| 1. | The contents of soil microelements - available boron , zinc and molybdenum generally increased in upland and paddy fields
土壤微量元素中，有效态硼、锌、钼普遍增加。 |
| 2. | The content of soil aggregation ( > 2 . 0mm ) in 0 - 20cm profile is higher than fallow land ' s and carag
而土壤容重值仍然较大，稳定入渗速率ki 。也远远小于撂荒地及柠条地。 |
| 3. | The result shows that the content of soil organic matter , total nitrogen and different forms nitrogen decreased firstly , then increased by time pasted
结果表明，该区域土壤有机质、全氮及各形态氮素含量呈现先降后升的趋势。 |
| 4. | The result indicates that yield is obviously positively related to the content of soil organic matter , total nitrogen and total phosphorus
5不同培肥模式都可以提高土壤有机质、全氮、全磷含量；玉米连作不施用任何肥料，土壤有机质含量、全氮、全磷含量下降。 |
| 5. | The content of soil water in the 10m profile shows : the content of soil water is high in 4 - 6m , there is a soil - drying - layer in 6 - 8m profile which was formed in the frontal stage of s . viciifolia growth
和柠条相比，狼牙刺地浅层( 3m内)土壤水分亏缺程度较轻，干层超过10m ，比同龄的柠条要深。 |
| 6. | The content of soil nutrients in 0 - 20cm profile is higher than that of 20 - 60cm profile . in the s . viciifolia plot , there are more organic matter , the whole nitrogen , quik - result nitrogen , quik - result kalium
狼牙刺各样地内， o一zocm剖面土壤养分高于20一6ocm ，土壤有机质、全氮、碱解氮高于对照撂荒地。 |
| 7. | According to the analysis of nutrient conditions of orchard soil and leafs in tianjin area , the content of soil nitrogen in most orchards of tianjin is high , while the phosphorus and potassium element is relatively low
摘要通过对天津地区果园土壤及叶片营养状况抽样化验、分析，认为天津地区大部分果园土壤氮素偏高，磷、钾元素较低。 |
| 8. | The contents of available p are increasing along with depth increasing . the contents of soil available k have the similar trend under different site types , that is , the contents surface layer about 0 - 40cm is higher than sub layer
刺槐林土壤全氮、有效氮含量表现出和有机质相似的变化规律，表层土的全氮、有效氮含量最高，随着土层深度的增加，土壤全氮、有效氮含量随着减小。 |
| 9. | The results indicated that the content of soil no3 ( superscript - ) - n increased with increasing amount of n fertilizer application , and under the same level of nitrogen fertilizer , from top soil to deep layer of soil , the content of soil no3 ( superscript - ) - n was decreased
结果表明，土壤剖面的硝态氮含量随着施氮量的增加而增加，在同一施氮量水平下，随着土壤深度的增加，土壤中硝态氮含量递减。 |
| 10. | Results showed that the contents of soil organic matter , nitrogen and phosphorus in paddy fields increased year after year , under the application of chemical fertilizer combined with organic manure , even if the chemical fertilizer played a leading role in the supply of nutrient
调查结果表明，在目前有机肥与化肥相结合，养分供应以化肥为主的施肥结构下，水田土壤有机质和氮、磷含量有所增加，旱地土壤有机质和全氮含量下降，土壤磷素有积累。 |
