| 1. | Prevent secondary salinization in songnen plain 松嫩平原稻区防止次生盐渍化的研究 |
| 2. | Parameters for degradation , sandification and salification of rangelands 天然草地退化沙化盐渍化的分级指标 |
| 3. | Cause of formation and prevention and cure measure for secondary soil salinization in sheyang county of sichuan province 射阳县土壤次生盐渍化的成因及防治对策 |
| 4. | The severe salinization has resulted in the economic loss about 14 billion yuan rmb ( price in 1996 ) 导致盐渍化的因素有气候、地形、水文地质、土壤质地等自然因素,以及灌溉方式和耕作制度等人为因素。 |
| 5. | Abstract : salinized soil in gansu province is mainly distributed in hexi corridor besides a few in lanzhou city and baiyin city 文摘:介绍了甘肃省土壤盐渍化的状况,分析了引起土壤盐渍化的因素,并进行了土壤盐渍化对生态环境损害的经济评估。 |
| 6. | The saline concentration in the 0 - 40cm layer will produce desalination trend in the 2010 . however , the saline concentration in the 40 - 70cm will be slightly accumulated 总体上节水改造工程对灌区浅层土壤盐碱化改善与防治有积极效果,但中层仍存在潜在盐渍化的可能。 |
| 7. | The study is mainly about the irrigating of song nen plain region and its water - salt sport environment condition and artificial factor etc 摘要主要研究了松嫩平原地区的灌溉方式、土壤水盐运动状况、环境条件以及人为因素等,对土壤次生盐渍化的形成,提出预防与防治具有重要的意义。 |
| 8. | The results of correlation comprehensive array analysis indicated that the water seepage from canal systems was the main cause resulting in the uprising of underground water table and the increase of soil salinity in qyrid 同时通过关联度综合排序分析,确定出渠系渗漏是造成灌区地下水位高、土壤盐渍化的主要原因。 |
| 9. | On the basis of some research findings in recent years , the paper summarizes characteristics and causes of greenhouse soil salinization , and its effects on soil properties , including physical and chemical properties and microorganisms as well 本文根据近年来的相关研究进展,综述了设施土壤次生盐渍化的基本特徵、形成原因及其影响因素,并阐述了设施土壤次生盐渍化对土壤理化性质以及土壤微生物状况的影响。 |