1. Make the ground very rich.
2. Put fertilizers within five feet of each other, and never allow
different kinds to run together.
3. Cover the ground two inches deep with tan-bark, sawdust, or fine
straw, just before the blossoms open; tan-bark is best.
Soil Culture Containing a Comprehensive View of Agriculture, Horticulture, Pomology, Domestic Animals, Rural Economy, and Agricultural Literature · 第 267 / 297 题