The Optimum Quantity of Grass Mulch for the Tea Field

Abstract

It has been recognized in. many experiments that the grass mulch has remarkable effects on the tea field. But optimum quantity of grass for mulch has not been yet well known.This experiment was carried out to determine the optimum quantity of the grass mulch for the tea field.The results obtained are as follows;1.In the mulchless tea field on slope, the growth of shoot, the yield of green leaf and the quality of green tea were inferior to those in the mulch field. This was thought to be mainly induced by deterioration of micro climate and run-off of fertilizer.2.The optimum quantity of grass mulch will be fluctuated by the kinds of grass and tea soil, but in this experiment, it was determined to be 10 ton fresh grass per hectare. The growth of shoot, the yield of green leaf and the quality of green tea were good at this quantity. Therefore the grass mulch was thought to be suitable for management of the tea field.