ALKALI LANDS AND THEIR RECLAMATION 



279 



is usually due to climatic conditions. It naturally results from a 

 rainfall insufficient to carry soluble material out of the soil, which 

 ultimately becomes so impregnated with it as to be unproduc- 

 tive (Fig. 128). 



Fi<;. 127. RrttinninK 



.-. 

 >.>t. (T. S. Dopt. of Agriculture. 1 



' 





Fio. 12S. Alkali area showinc tho nbsonro of vpRpfnti 



(T*. S. Drpt. of AKrirnltnro .1 



