the financial support provided by Specialized Research Fund for the Doctoral Program of Higher Education(20102325110002,20112325110006);National Key Technology Support Program(2014BAD06B00);Heilongjiang Postdoctoral Fund(LBH-Z13030).
Pullout forces of rice seedling and barnyard grass were tested by universal testing machine controlled by WDW-5 type microcomputer to obtain the pullout forces of rice seedling and barnyard grass.The measured pullout ...