Brief Answer:
This is mostly due to Psychological Ihibition.

Detailed Answer:
Hello
Thanks for your query,based on the facts that you have posted it appears that you have problem of Anejaculation while performing the sex where as you get ejaculation while masturbating.

I shall be happy if you can post me few more details to help me in making comments on your problem.
1) Do you spend adequate time in foreplay?
2) Are you stressed while performing the sex?
3) Is there equal response from your wife during sexual intercourse?

During masturbation there is excessive stimulation of glans and foreskin due to tight grip of the hand over penis which is important factor to initiate ejaculation where as in intercourse in addition to anxiety this stimulation is inadequate resulting into anejaculation .

Please consult qualified Sexologist to learn to modify your sex techniques like performing sex with legs of the wife completely stretched after you have penetrated her vagina so that your penis is hold tightly by her vagina.This will provide adequate stimulation to penis and help to get ejaculation.

Spend more time in foreplay and.Cooperation of your wife in the form of squeezing your genitals will also help to increase stimulation of penis.

As regards semen analysis it reveals what is called as Asthanospermia meaning there by that %tage of Active grade one motile sperm is very low .Truly speaking there are no medicines that can improve motility of sperms ,however following general measures help to improve sperm motility to some extent.
1) Practice regular exercise for 45 minutes followed by meditation for 1/2 an hour in the morning.
2) Take high protein diet rich in vegetables and fruits and Vitamin A,C,D,E.and Zinc
3)Take anti oxidants like Almonds 5-6 everyday..
4) Avoid alcohol and smoking..

Hope I have answered your query. Please feel free to write if you have more questions I shall be happy to help you .
Thanks and Regards .
Dr.Patil.

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