Answer : 1. "वर्षा कालीन खड्डों में पानी भरने पर वहाँ की जाने वाली खेती ।"
Explanation :

Khadin-It is a temporary pond made of earth, it is built under some sloping land. There is an earthen wall (Dhora) on both sides and a strong wall made of stone on the third side. When there is excess water, the pond gets filled and the water flows into the next pond. After the water in Khadin dries up, agriculture is done in it.