棉秆油渣还田与棉花自养作用

Return the Stalk and Seed-kernel Cake of Cotton to Field to Realize the Function of its Autotrophy

若将棉秆与油渣作基肥还田，则可归还棉株生长期间所吸收氮、磷、钾、铜、铁、锰、锌、硼等养分总量的９５％，从而可以发挥棉花的自养作用。

If we return the stalk and seed-kernel cake of cotton to field before ploughing,it can provide 95% N、P、K、Cu、Fe、Mn、Zn、B amount which cotton plant absorbed from the soil during the growing period.Therefore it can achieve cotton autotrophic function and reduce the quantity of fertilizer which we used for following crop.