作者：Nianfeng; LIN; Shuo; LIANGmelilotusofficinalisfarmlandgrainequivalenteffects
摘要：In view of Melilotus officinalis having high protein content and significant effect on improving saline alkali soil,a comprehensive experiment about improving saline alkali soil by planting M.officinalis was carried out to study its effects of potential equivalent land and equivalent grain.The results showed that the forage yield was 80 000 kg/hm^2 in the degraded grassland field(average pH of 9.06)after planting M.officinalis.The forage had a crude protein content of 17.50%,so the total content of crude protein was 1 400.64 kg/hm^2,which was equal to 15.562 t of corns produced from 3.557 hm^2 of medium-quality arable lands.Similarly,it was equal to 3.573 t of soybeans produced in 1.786 hm^2 of medium-quality arable lands.Therefore,based on such principle,the comprehensive development of creatures-soil system can acquire the equivalent land and equivalent grain resources.
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