我家住在小山村,这里田少地多,爸妈常年在外打工,爷爷奶奶在家照看我们。家里养一些鸡啊、鸭啊、猪啊,这些家禽家畜的饲料来源,主要是爷爷在地里种的红薯。前些年,爷爷在屋前屋后的山坡上插上了红薯藤。就近的几块地,爷爷就施上一些草木灰,离家远的就施了些碳酸氢铵。秋收时节,爷爷去挖红薯,施了草木灰的红薯比施了碳酸氢铵的要大很 My family lives in a small village, where more fields and less, parents work outside the perennial, grandparents care at home with us. Home to raise some chickens, ducks, pigs, feed sources for these poultry livestock, mainly the sweet potato that Grandpa plants in the ground. A few years ago, my grandfather put sweet potato vine on the hillside behind the house. A few days ago, my grandfather put some ash on it, and some ammonium bicarbonate was applied far away from home. Autumn harvest season, grandfather to dig sweet potato, put the sweet potato ash than applied ammonium bicarbonate