研究黄土高原土壤水分变化规律，有着极其重要的科学和实际意义。
That has practical and scientific significance to study the dynamic law of soil moisture.
利用定位观测数据，对四川中部丘陵地区不同种植模式下旱地土壤水分变化规律进行了初步研究。
Based on the data of observation in fixed location, the pilot study on the law of soil moisture variation in different cropping patterns on dryland in hilly area of Central Sichuan has been done.
依据定位观测数据，对紫色土丘陵区农用地土壤水分的动态变化规律进行了初步研究。
Based on the data of observation in fixed location, the pilot study on soil moisture dynamic variation law of farmland in purple soil hilly region has been done.
主要研究成果如下： （1）不同树种光合生理过程日变化规律不同树木光合生理过程日变化规律即与树种特性有关也与土壤水分密切相关。
The next are the main results: (1)The diurnal change rule of the process of photosynthetic physiological of different trees has the connection with the characteristics of trees and soil moisture.
以辽宁省主要旱地作物玉米为研究对象，研究了其灌溉田土壤水分变化及其耗水规律。
We have studied the change law of soil moisture and evapotranspiration in irrigated farmland of corn which is the principal crop of dry farmland in Liaoning province.
结果表明：水稻叶气温差在不同的土壤水分条件下表现出不同的日变化规律，较低的土壤水分导致了较高的叶气温差；
The results show that the diurnal variation of leaf-air temperature difference varies under different soil moisture conditions, the low soil moisture results in large leaf-air temperature difference.
本文研究了砒砂岩地区沙棘人工林地土壤水分物理性质及其变化规律。
The soil hydro-physical properties of artificial seabuckthorn woodland had been studied in arsenic sandstone areas.
本文简要介绍林地土壤水分的入渗性、植被对土壤水分的影响，以及林地土壤水分的季节和垂直变化规律。
This treatise briefly introduces the forest soil moisture's infiltrating quality, the vegetation's effect on soil moisture and the forest soil moisture's seasonal and vertical change rules.
试验研究内容和主要结论概括如下：（1）番茄茎直径变化规律及其与土壤水分关系。
The main research results were as follows:(1)The law of tomato stem diameter variation and its relationship with soil water content.
选择科尔沁沙地典型流动沙丘作为研究对象，分析了流动沙丘土壤水分的时空变化以及土壤水分特征常数的空间变化规律。
This paper analyzes the spatial and temporal variety regulation of soil moisture and soil moisture characteristic constants on mobile dune in Horqin sandy land.
绿洲-漠交错带是植被恢复的一个重要区域，而植被恢复的关键又是了解沙丘土壤水分的变化规律。
The eco-tone between oasis and desert is a important zone for vegetation restoration. The key for vegetation restoration is to know the soil water content of dune.
为了揭示农牧交错地区不同农田耕作方式对其水分环境的影响过程及规律，选择翻耕地和免耕地两种土地耕作类型，分析不同耕作方式下土壤水分的时空变化情况。
In order to evaluate the effect of different tillage types on soil moisture, the paper analyses the temporal and spatial variations of soil moisture under plough tillage and no-tillage.
依据定位观测数据，对紫色土丘陵区农用地土壤水分的动态变化规律进行了初步研究。
Soil physicochemical properties under 4 different land utilization types in a purple soil hilly region were analyzed.
依据定位观测数据，对紫色土丘陵区农用地土壤水分的动态变化规律进行了初步研究。
Soil physicochemical properties under 4 different land utilization types in a purple soil hilly region were analyzed.
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