Today's i m adding some best back exercise which train your back and lower back as well
Bent Barbell Rows
This is a basic back exercise that works the latissimus dorsi, trapezius, erector spinae, biceps, and the forearms.
Bend over at the waist and grab a barbell with your hands placed shoulder width apart. Keep a slight bend in the knees. Lift the bar with your arms straight. Keep your upper body at a 45-degree angle to the floor and arch your back.
Moving just your arms row the barbell into your stomach. Hold this position and squeeze your back muscles for a second to maximize the peak contraction. Slowly lower the bar until your arms are straight, but do not let the barbell touch the floor in between each rep. Keep the tension on the muscles. Repeat.
Tips - For variety you can use an underhand grip (i.e. palms of the hands facing forward) this will work the lower lats more. You can also do this exercise with dumbbells or a low cable pulley.
1 Arm Dumbbell Row
This exercise works the latissimus dorsi, trapezius, biceps, and the forearms.
Kneel on a flat exercise bench with one knee, you other foot placed on the floor beside the bench. Support your upper body by placing your hand on the end of the bench. With your other hand grab a dumbbell. Keep your back flat and let the dumbbell hang down at arms length.
T-Bar Rows
This exercise works the lats, spinal erectors, traps, rear deltoids, biceps, and forearms.
Use your lats and arm strength to pull the T-bar up and row it into your abdomen. Arch your back and squeeze your lats together to maximize the peak contraction in the back muscles. Slowly lower the T-bar back to the starting position. Repeat.
Tip - for variety you can do this exercise with a reverse grip to hit the back muscles from a different angle.
Seated Pulley Rows
Attach a narrow handle to a low cable pulley. Sit in front of the machine and grab the handle with both hands. Brace your feet and keep your knees slightly bent.
Lean forward and straighten your arms to stretch your lats completely. Hold this stretched position for a second. Then pull the handle into your stomach and sit up straight. Arch your back and squeeze your back muscles, hold this position for a second to maximize the peak contraction. Repeat.
Tip - you can use different handles and grips to work the back muscles from different angles. (i.e. overhand grip, underhand grip, etc.)
Lat Pulldowns
The lat pulldown works the lats, rear deltoids, biceps, and forearms.
Attach a straight bar to a high pulley. Grab the bar a bit wider then shoulder width. Sit or kneel in front of the pull down machine.Straighten your arms and let your lats stretch. Hold this position for a second. Arch your back slightly and pull the bar down in front of your head until the bar is just below your chin. Hold this position for a second to maximize the peak contraction. Slowly straighten your arms to the starting position. Repeat.
Tips - you can vary your grip to work your back from different angles. (i.e. wide grip, narrow grip, overhand, underhand, etc.) 
The chin up works that same muscles as the lat pulldown (i.e. the lats, rear deltoids, biceps, and forearms). Chin ups are an advanced exercise because you have to be able to lift your entire bodyweight.
Grab a chin up bar with your hands a bit wider then shoulder width apart. Bend your legs so that your body is hanging from the chin up bar.Straighten your arms and let your lats stretch. Hold this position for a second. Arch your back slightly and pull yourself up to the bar until your chin is just over the bar. Hold this position for a second to maximize the peak contraction. Slowly lower yourself to the starting position. Repeat.
Tips - you can vary your grip to work your back from different angles. (i.e. wide grip, narrow grip, overhand, underhand, etc.). If you have trouble gripping the bar you can use a pair of lifting straps and strap your hands to the chin up bar.
