Salt concentration disorder - Enrui no Udo Isogai

…In recent years, the area of ​​greenhouse cultivation has rapidly increased in Japan due to the remarkable spread of forced and retarded cultivation of vegetables. In greenhouse cultivation, the annual amount of irrigation is said to be only 20-25% of the annual precipitation, so there is almost no runoff of fertilizer components from the soil. If heavy fertilization continues, fertilizer components accumulate in the soil, causing salinity damage in which crops begin to wither from the leaf edges. In addition, because there is no free exchange of gases with the outside air inside the greenhouse, gas damage can occur in crops due to the volatilization of nitrite in acidic soil and the volatilization of ammonia gas in soil with high soil reactivity. …

*Some of the terms mentioned in relation to "salt concentration disorder" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…近年，日本では野菜の促成･抑制栽培のめざましい普及により，施設栽培の面積は急増している。施設栽培では年間の灌水量が年間降水量の20～25％にしかあたらないといわれ，そのため肥料成分の土壌からの流亡はほとんど起こらず，多肥栽培が続くと土壌中に肥料成分が集積し，作物が葉縁から枯れはじめる塩類濃度障害がでる。また，施設内は外気と自由なガス交換が行われないため，酸性土壌では亜硝酸の揮散，土壌反応の高い土壌ではアンモニアガスの揮散により，ガス障害が作物にでることもある。…

※「塩類濃度障害」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報