The order of water - holding capacities in different plantations was as follows : altinglia gracilipes > schima superba > fokienia hodginsii > cunninghamia lanceolata 不同林分的持水量大小排序为：细柄阿丁枫杉木混交林木荷杉木混交林建柏杉木混交林杉木纯林。
In conclusion , the variable degree of the soil water properties and bulk density in different layers is water content > wilting point > field capacity > saturation > bulk density 总的来看，各水分特性在剖面各层的变异情况为:含水量>萎蔫含水量>田间持水量>饱和含水量>容重。
Bulk density in 0 ~ 20cm , 20 - 40cm and field capacity in 20 ~ 40cm can be simulated with pure nugget effect model , and they are not spatially correlated in sampling scope . 4 O ~加cm 、 20一40cm土壤容重和2 } 40cm田间持水量符合纯块金效应模型，说明在采样范围内它们的空间相关性不存在。
Although the biomass and yield of rice had been hardly affected by soil moisture content , when it was 80 % or 100 % of saturated water content ( swc ) , but markedly by soil moisture content 60 % of swc 土壤含水量为饱和持水量的60 %时对旱作水稻生物量和产量影响较大，而80 %和100 %时几乎没有影响。
The coefficient of variation of saturated water content decreased with the depth of profile . the coefficient of variation of bulk density and field capacity fluctuate with depth of soil 饱和含水量的变异系数都随深度的增加逐渐降低，含水量、容重和田闷持水量的变异系数随深度的呈波动变化。
In order to gain higher yield of rice , it is essential to pay attention to p application or take some measures to improve soil p utilization efficiency 这说明控制土壤水分为饱和持水量的80 %时就能完全满足旱作水稻的生长，但要求获得较高的产量时必须注意磷肥的投入，或者采取一些调控措施提高土壤磷的利用率。
After yearly burning , soil moisture content , porosity , separate coefficient , capillary and field moisture capacity increased , however , soil saturated water retaining capacity and unit weight decreased 连年火烧使土壤含水率、孔隙度、分散系数、毛管持水量和田间持水量升高，而使土壤饱和持水量、容重下降。
The nitrogen between minimum protein content and maximum yield were the nitrogen of coordinated variation of yield and grain protein content in 50 % or 60 % of soil water content 蛋白质含量最低值和产量最高值之间对应的施氮量为产量和蛋白质含量在土壤水分含量为田间最大持水量的50 %和60 %条件下协同变化的施氮量区间。
The field capacity and porosity increase gradually and bulk density decrease gradually . the significance linear regression between the field capacity and soil organic matter is discovered as well as porosity and bulk density 此外，随植被演替， 0 5cm土层田间持水量和孔隙度逐渐增加， 0 5cm土层容重逐渐降低，且均与有机质含量呈显著线性正相关。
In addition to nutritional factors , the productivity of many acid soils is affected by physical factors that include low water holding capacity （ oxisols , spodosols ） and susceptibility to crusting , erosion and especially compaction （ oxisols , ultisols ） 除了养分因素外，许多酸性土壤的生产力受物理因素的影响，包括持水量低（氧化土，灰化土）和对结壳、侵蚀及特别是压实（氧化土、老成土）敏感。
