Explanation:

Rice has largest acreage (area under cultivation) as well as production followed by Wheat.
Rice is planted across 45-50 million hectares and yield is about 105-110 million tons annually. Wheat on the other hand is planted across 30-32 million hectares and yield is 95-100 million tons annually.
The figures show that wheat has higher productivity than rice in India due to better input used in North India.