??? ???? ???? ????? ????? ???? ?????? ???? ???? ??? ??? ???? ? ???? ?? ??? ? ????? ??? ?????? ? ?????? ????? ?????? ???? ???? ????? ? ??? ????? ? ??????? ??? ??? ?????? ?? ????? ???? ??? ????? ????? .It's well known that sufficient Potassium degrees are crucial to crops to attain higher excellent yields. In combination with the central purpose of P