盐土

Solonchak agriculture ; salt enduring plant ; agriculture structure adjustment ; sustainable development

盐土农业；耐盐植物；农业结构调整；可持续发展

The invention discloses an ecological engineering regulation method for fast reducing salinity of a sand coated district which belongs to the marine solonchak improving method technical field.

本发明公开了一种砂涂区土壤快速降盐的生态工程整治方法，属于滨海盐土的改良方法技术领域。

This laboratory of existing concrete research directions include: Ecological engineering and systematic ecology; Agricultural ecology of seashore solonchak; The physiological ecology of the helophyte; Cell engineering research and quick breeding of helophyte; Molecular biology and transgene research of helophyte.

该实验室现有的具体研究方向包括：生态工程学与系统生态学；海滨盐土农业生态学；耐盐植物的生理生态；耐盐植物的细胞工程研究与扩繁；耐盐植物的分子生物学与转基因研究。

Economic value: Sesbania is admirable summertime green manure, have be able to bear or endure salt, be able to bear or endure waterlogged, grow rapid, adaptability is wide, fight go against force to wait for character by force, reason reforms for solonchak area good crop of soil.

经济价值：田菁是优良的夏季绿肥，具有耐盐。耐涝。生长迅速。适应性广。抗逆力强等特性，故为盐土地区改良土壤的优良作物。

The microbial properties of artificial soil mixed with brackish dredged sediment,caustic sludge and coal ash were studied,with coastal solonchak and Turbi-Anthric Primosol as the control.

以滨海盐土、扰动人为新成土为对照，就利用海湾泥、碱渣和粉煤灰作为城市园林绿化种植基质的土壤微生物特性进行了研究。

There is an annual movement of salt with water in coastal solonchak in Liaoning as follows: The thawing-evapo-salinization period in spring, irrigation-leaching-desalting period in rice growing season from May to September, evapo-salinization period again in late fall and relatively stable period in winter.

辽宁沿海盐土中盐分每年随水移动如下：春季为冻融-蒸发-盐化期，5~9月为灌溉-淋洗-脱盐水稻种植期，晚秋为蒸发-盐化期，冬季为相对稳定期。

The invention forms a new soil layer structure with the upper part rough and the lower part fine, increases a coarse sand content of upper soil and obviously improves soil tilth; thereby facilitating the leaching of the salt. Only half a year is needed and then the salt content of a plow layer is reduced from six point five four gram per kilogram to one point two three gram per kilogram; thereby speeding up the improvement and utilization speed of the marine solonchak and restraining the uprise of salt.

本发明形成上粗下细的新土层结构，增加了上层土壤的粗砂粒含量，明显改善了土壤耕性；有利于盐分的淋洗，仅需半年时间，耕作层含盐量即可由6.54g/kg降至1.23g/kg，加快了滨海盐土的改良利用速度，并抑制了返盐现象。

The results showed that the amounts of base cations leached from calcareous soils and coastal solonchak were lower than the cation exchange capacity and the releasing amounts of Al3+ being lower than 0.40mmol·kg-1 all the way under the treatment of simulated acid rain with each pH value from 2.5 to 5.6,so the H+ buffering...

结果表明，石灰土和滨海盐土的阳离子淋溶量低于阳离子交换量，土壤主要处于阳离子交换缓冲范围和碳酸盐-硅酸盐缓冲范围，Al释放量一般低于0.40mmol·kg~(-1)，铁铝土纲系列土壤在阳离子释放总量超过阳离子交换量后，淋溶液pH值急剧下降，此时Al淋溶量明显增加，质子缓冲转向Al缓冲范围，其释放量决定于土壤富铁铝化程度的高低和活性Al含量的多少，紫色土在低pH模拟酸雨淋溶下，由于含大量硅铝率较高的易风化原生或次生矿物，盐基释放量高于CEC，但Al释放量未明显增加，淋溶液pH也较稳定，土壤尚处于矿物风化为主的硅酸盐缓冲范围。

In the alluvial fan edge parts, mainly meadow marsh soil and meadow saline soil; this to the desert between, places the desert soil salinization and alkalization the main agricultural use value is not high.

在冲积扇缘部位，主要是草甸沼泽土和草甸盐土；由此至沙漠之间，则以盐化和碱化的荒漠土为主，农业利用价值不高。

Through field survey and the investigation of the aerial photograph,we have found that the geographical landscape of the seashore belt shows distinct photographical characteristics on the aerial photograph.

通过实地调查和航片研究，发现海岸带地理景观在航片上具有明显的影象特征，其中尤以海岸动力地貌和盐土植被在航片上最富有特征，而海岸地貌和植被与土壤的性质和分布又具有很好的相关性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。