English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

In  the  region  of  Biskra,  one  saw  to  be  born  in  about  ten  years  an  important basin  of  production  of  which  one  says  that  he/it  is  the  first  in  Algeria  for  the  cultures under  abris;  avec  more  of  more  than  1400ha.Long-term,  one  attends  the  deterioration of the quality of the agricultural production and a deterioration of soils under the effect of the saltiness. In this context, our work is about the saltiness of soils under greenhouse tothe level of the experimental station of the Technical institute of the Development of the  agronomy  Of  the  Sahara  (I.T.D.A.S)  of  Ain  Benoui  to  10km  Southbound  west  of Algiers is of Biskra and 600 km to the South. To the term of this work, we could put in evidence  some  milked  of  evolution  of  the  saltiness  of  soils  submitted  to  the  irrigation (under  greenhouse)  in  relation  to  those  of  the  witnesses  (non  cultivated).  One  selected two  cultivated  greenhouses  and  irrigated  by  the  system  drips  to  drop,  one  of  them  is situated meadows of the drain and the other moved away of this last with a witness (soil non worked). He/it comes out again that the water of irrigation is salted excessively and that soils are generally salted to greatly salty Between the withdrawal of soil of March and  the  one  of  September  2003,  we  noticed  an  increase  of  the  saltiness  in  the greenhouses  as  well  as  in  the  witness  under  the  effect  of  the  strong  evaporation  in summer  and  of  gone  it  back  up  capillary  of  the  tablecloth.  On  the  other  hand,one noticed  that  the  greenhouse  situated  far  from  the  drain  underwent  an  accumulation  of salts  in  the root zone  as  well  as  in  the  witness  in  spite  of  the  presence  of  a  drainage network   situated   to   some   meters.   However,   the   greenhouse   situated   all   around immediate of the drainage channel recorded a washing accentuated of salts in this zone. It lets think that this kind of earths sandblasting machines irrigated with a loadedwater can  behave  in  an  exemplary  manner  if  they  are  drained  well.  That  is  to  say  with  a network of drainage very brought closer of the greenhouses.

Degradation of soil quality in greenhouses in the Saharan zone. Case of the region of Biskra (south-east Algeria)