| 1. | Effect of improved saline alkali soil chemical character by phosphate plaster
磷石膏改良盐碱地土壤化学性质的效果 |
| 2. | Permeation and soil chemical barrier assessment of 3 kinds of termiticides
3种白蚁药剂的渗透深度及土壤化学屏障的评价研究 |
| 3. | Effects of sulfur - coating left from using scu on cole growth and soil chemical properties
控释尿素硫膜对土壤性质和油菜生长的影响 |
| 4. | Soils : investigation and testing . determination of the organic matter content . soil chemical test
土壤:调查和试验.有机物含量测定.土壤化学试验 |
| 5. | Spatial pattern of soil chemical properties in degraded sandy grassland under post - grazing natural restoration in horqin sandy land
放牧干扰后自然恢复的退化沙质草地土壤性状的空间分布 |
| 6. | The results obtained by the correlation , path and principal component analysis showed that soil urease and alkaline phosphatase activities could be as a comprehensive index of soil fertility , and their enzyme activities are affected by soil chemical properties and other enzymes
结果表明，土壤脲酶和?性磷酸酶活性可以作为土壤肥力的指标，且酶活性大小受到土壤化学性质和其它酶活性影响。 |
| 7. | The ecological functions of earthworm include : ( 1 ) effects on key soil ecosystem processes such as decomposition of soil organic matters and nutrient cycling ; ( 2 ) effects on soil chemical and physical properties ; and ( 3 ) interaction with plants , microorganisms and other animals
蚯蚓活动及其在生态系统中的功能受蚯蚓生态类群、种群大小、植被、母岩、气候、时间尺度以及土地利用历史的综合控制。 |
| 8. | The theory and method of geostatistics are currently still one tide of researching spatial variability quantitatively both at home and abroad . but research about soil spatial variability still focus on soil physical characters , articles in soil chemical properties is rarely found
随着地理信息系统( gis )的广泛应用和地理学学科的发展，利用地统计学，结合gis技术来研究土壤性质空间变异已成为目前的土壤学的研究热点之一。 |
| 9. | The distribution and change pattern of soil co2 concentration in soil profile data are analyzed as well as its effect factors . a model for soil caco3 eluviation - illuviation is developed based on mechanism of soil chemical thermodynamic principle and applying other modeling experience for reference
本文以砖窑沟流域为例研究和分析了土壤剖面co _ 2浓度的分布变化规律及其影响因子；对土壤碳酸钙淋溶锭积进行了定性、定量研究。 |
| 10. | Soil saturated capacity , capillary capacity , total porosity and capillary porosity showed the trend of the " u " during the successional course of artificial forest , namely , they reduced on the early successional stages , after picea reached mature forest , soil porosity recovered slowly . the content of natural water was mainly affected by capillary porosity . from soil chemical properties analysis , the content of soil organic , humus , ha , fa and ha / fa of topsoil was more than that of bottom layer
即人工云杉幼林向成熟林演替阶段，土壤饱和持水量、毛管持水量及总孔隙和毛管孔隙则减少，在40年生云杉林达最低值，之后随着云杉自疏，微生态改善，林地凋落物分解加快，土壤饱和持水量、毛管持水量及总孔隙和毛管孔有上升的趋势，毛管持水量是决定林地自然含水量的主要因子。 |
