1) soil water availability
土壤水分有效性
1.
Centrifuge method was used to measure soil water characteristic curve,through analyzing water absorbing ability and water retention ability of soil to investigate the influence of soil conditioner on soil water availability.
以聚丙烯酰胺(PAM)与磷石膏(PG)为土壤结构改良剂,利用离心机法,测定土壤水分特征曲线,从分析土壤的吸水能力和持水能力的角度出发,研究土壤结构改良剂对土壤水分有效性的影响。
2.
It was followed that soil water availability of different vegetation types ranged from 1.
对退耕还林还草区具有代表性的乔木(山杏和刺槐)、灌木、农田的土壤水分有效性和蓄水能力进行了测定和对比研究。
3.
Based on this, the soil water availability and its product.
在半干旱黄土高原丘陵沟壑区,采用Li Cor6200便携式光合仪和Li Cor1600便携式稳态气孔计,对9年生金矮生苹果树的净光合速率、蒸腾速率、水分利用效率、气孔导度、胞间CO2浓度和气孔限制值与土壤水分的定量关系进行了研究;以光合作用生理参数为指标对苹果园土壤水分有效性及生产力进行了分级与评价。
2) soil moisture availability
土壤水分有效性
1.
The field simulation column method was employed to study quantitatively the dynamic law of soil moisture availability to plant in the Loess Plateau,by using a mathe- matical model on the relation between crop yield and soil moisture,i,e.
采用田间模拟土柱试验方法,利用作物产量一水分关系数学模型,定量研究了黄土高原土壤水分有效性动态规律,在田间持水量的95%到55%的土壤湿度范围内,随着土壤湿度的不断降低,土壤水分对植物的有效性按抛物线规律递减,而且有效性递减的速率越来越快。
2.
In this paper,some aspects of soil moisture availability, such as field capacity, permanent wilting percentage, available water capacity, the classical concept of soil moisture availability, the new concept of soil moisture availability, the descriptive method and the determination criterion of soil moisture availability to plant, and so oil, were reviewed and discussed.
本文对土壤水分有效性的诸多方面，如田间持水量，凋萎湿度，土壤有效水量，土壤水分有效性的经典概念，土壤水分有效性的新概念，以及描述土壤水分有效性的评价标准和方法等，进行了介绍、评述和论述。
3) instantaneous water use efficiency
有效土壤水分
1.
Evapotranspiration and CO 2 fluxes were measured using Bowen ratio energy balance method in winter wheat field in North China Plain from April to June 1996 and instantaneous water use efficiency ( WUE ) was obtained.
冬小麦水分利用效率白天平均值与０ｃｍ～６０ｃｍ的有效土壤水分呈负相关，达到０。
4) soil available nutrient
土壤有效性养分
5) soil available water
土壤有效水
1.
The soil water regime in diifferent irrigation conditions was studied by ASI(index of soil available water) method.
对不同灌溉模式下的土壤水分状况用土壤有效水指数法［１］进行了研究，计算出各模式下土壤月初有效水含量及土壤供水量。
6) soil availability
土壤有效性
补充资料：土壤水分有效性
分子式：
CAS号：
性质：土壤中水分能被植物吸收利用的难易程度和数量多少的性质。土壤水分可分为无效水、有效水、速效水和迟(缓)效水。
CAS号：
性质：土壤中水分能被植物吸收利用的难易程度和数量多少的性质。土壤水分可分为无效水、有效水、速效水和迟(缓)效水。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条