湿地稻-鸭复和生态系统的土壤理化性状的研究。
The study on soil physical and chemical characteristics of wetland rice-duck complex ecosystem.
植物群落对土壤理化性状及土壤养分转化的影响都很显著。
Plant community has a great influence upon the physicochemical properties of soil and nutrient inversion.
结果表明，各施肥区均不同程度地改善了土壤理化性状，提高了作物产量。
The results are as follows. The physical and chemical soil characters ere improved in every experimental plot, and the crop yield was increased in varying degrees.
所述方法包括设置隔离层，铺设盲沟，修筑集水 井，改善土壤理化性状。
The method comprises the flowing steps: arranging the isolation layer, laying the blind drains, constructing the water-collecting well, and improving physical and chemical soil properties.
分析了退化沙质草地开垦耕种2年和围封恢复5年后土壤理化性状的特征和变化。
The changes of some selected physicochemical properties of degraded sandy grassland due to 2 years of cultivation and 5 years of enclosure for vegetation restoration were studied.
在短花针茅荒漠草原对比研究了划区轮牧和自由放牧两种放牧制度对草地土壤理化性状的影响。
The comparative studies on the influence of rotational grazing and continuous grazing on the physical and chemical characters of soil was conducted in desert steppe of Stipa breviflora.
施用后可达到肥效高、增产大，肥力稳、见效快，能改良土壤理化性状，增强作物的抗逆能力。
Fertilizer can be applied to achieve high yield, fertility and stability, effective, and can improve soil physical properties. increase crop resilience.
通过大田试验研究了黄土地区种植作物对旱作农田土壤理化性状、磷酸酶活性以及土壤n2o排放的影响。
Field experiments were carried out on Loess Plateau to investigate the effects of cropping on the physical and chemical properties, phosphatase activity, and N2O emission of upland soils.
对不同覆盖条件下甘蔗试验地土壤微生物区系研究的结果表明，不同覆盖条件为微生物提供了特殊的土壤生态环境，使土壤理化性状发生了一定变化。
In order to study the role of wetland soil on the purifying the micro-polluted water, soil-bacteria system is built to study experimentally in Yuqing Lake in Jinan.
随着围栏时间的增加，植物群落特征发生了变化，土壤的理化性状也相应地发生了一定的变化，但不如植被变化明显。
With the increase of enclosing time, plant community characters changed, soil properties also changed accordingly, but the changes were not significant like that of vegetation.
盐碱土是陆地上分布广泛的一种土壤类型，其不良的理化性状严重影响着植物的生长发育。
The saline-alkali soil is a widespread of soil types in the land distribution, and its serious influence the plant growth and development on physical and chemical characteristic.
调查了研究区土壤主要类型及其分布特征，获得了详实的土壤剖面理化性状资料。
Make investigations on main district soil type and its distribution character, obtaining specific and accurate soil section physical and chemical property materials.
调查了研究区土壤主要类型及其分布特征，获得了详实的土壤剖面理化性状资料。
Make investigations on main district soil type and its distribution character, obtaining specific and accurate soil section physical and chemical property materials.
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