Metodu irrigazzjoni tiegħek hija "qtil"-ħamrija
Għal ħafna nies, salinization ħamrija huwa kemm familjari u mhux familjari. Familjari magħha, ħafna oqsma bħall-żoni kostali Ċina u żoni interni jkollhom żoni kbar ta 'art' salina alkali li tista 'tidher kullimkien. Il-formazzjoni ta 'tali art-salina alkali huwa relatat mal-klima lokali, il-ħamrija, topografija, ġeomorfoloġija, ġeoloġija u fatturi oħra. Alkalinizzazzjoni. Mhux familjari huwa li l-salinization ħamrija tal-biedja ikkawżati minn miżuri tal-bniedem mhux raġonevoli ma jinftihemx tajjeb.
Unreasonable human measures are mainly due to the unreasonable irrigation and drainage system, excessive irrigation, poor drainage, causing the groundwater level to rise, resulting in soil salinization, which is called soil secondary salinization. Saline-alkali land is increasing every year, because of the “contribution” of human beings. There are more and more secondary salinization sites, and about 10 million hectares of land are discarded each year due to secondary salinization of the soil.
According to research, the two rivers of one of the world’s four major civilizations, the main cause of extinction is the secondary salinization of soil.
Kif ma ċomb irrigazzjoni raġonevoli li salinization ħamrija?
Salinization ħamrija, f'termini sempliċi, huwa li l-melħ akkumulat fuq il-wiċċ tal-ħamrija jeċċedi t-tolleranza tal-impjant u taffettwa t-tkabbir normali tal-pjanta.
Flood irrigation
Jekk huwa primarja jew sekondarja, ħafna mill-melħ akkumulat fuq il-wiċċ tal-ħamrija jiġi minn art, u l-art titla fil-wiċċ ħdejn il-wiċċ b'azzjoni kapillari, li jġibu melħ għall-wiċċ tal-ħamrija.
The key to this is “groundwater rise.” If the amount of irrigation is too large, the water will penetrate down a lot, the drainage will be poor, the groundwater level of the cultivated land will rise, the groundwater will get closer and closer to the ground, and the salt carried in the water will easily reach the surface.
In this process, it is necessary to introduce a strong assist in the accumulation of salt on the surface – strong evaporation.
When groundwater brings soil salinity to the surface, strong evaporation will quickly turn the water into water vapor, unable to continue to carry salt, and the salt will stay on the soil surface. After a period of ascending-accumulating cycles, the surface of the soil accumulates salt, and for a long time, the soil will be salinized.
The secondary salinization of soil mainly occurs in the arid and semi-arid areas with strong evaporation, and the evaporation is greater than the rainfall. It is distinguished from the native salinization of the soil, mainly as a result of human economic activity.
Secondary salinization of soil
metodu ta 'trattament salinization ħamrija
Trattament salinization ħamrija dejjem kienet problema kbira ffaċċjati minn xjentisti ħamrija. Jekk huwa salinization primarja jew salinization sekondarja, il-miżuri huma simili. Il-metodu bażiku ta 'governanza huwa li jaqta' l-up-evaporazzjoni proċess akkumulazzjoni taħt l-art lok melħ.
Improve agricultural drainage system
Prinċipalment mill-irrigazzjoni, drenaġġ, insabbjament, kontra l-infiltrazzjoni u l-ġestjoni ewlenin oħra. L-ilma ħelu (xita jew irrigazzjoni għargħar) huwa użat biex tlaħlaħ il-ħamrija, u s-sistema tad-drenaġġ iskariki umdità tal-ħamrija żejda mill-ħamrija fil-ħin. Ilma ħelu jistgħu jaħslu l bogħod l-ħamrija u jieħdu aktar melħ. It-tieni nett, il-livell taħt l-art tista 'tiġi kkontrollata għal fond sikur, jonqos evaporazzjoni ħamrija u t-tnaqqis moviment melħ fuq.
Film ħamrija
Permezz kisi tal-ħamrija, dan jista 'jipprevjeni l-wiċċ tal-ħamrija milli jiġu f'kuntatt ma' l-atmosfera, jitnaqqsu l-evaporazzjoni u jnaqqsu żieda taħt l-art.
Metodu bidla ħamrija
Direttament jibdlu l-ħamrija tal-wiċċ 'melħ alkali għall-ħamrija ta' kwalità għolja. Tħawwil uċuħ melħ tolleranti huwa wkoll trattament komuni.
For secondary salinization, the most important thing is to improve the irrigation and drainage facilities to prevent excessive irrigation during irrigation; after irrigation, the excess water can be discharged in time. The agricultural drainage system is currently the most widely used and effective solution. It fundamentally cuts off the cyclical process of groundwater rise-salt up-evaporation and salt accumulation. The rest of the methods are improvements under existing conditions.
ħin Post: 2019/05/05