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据我所观察:梯级茶园中全年发生水土冲刷平均达30余次,每亩流失土量1902.3市斤。尤其沟边冲刷比园地更严重,冲刷量大7.1倍,每亩每年随水流失的全氮约1.9市斤,全磷0.6市斤。全钾约8.5市,腐殖质15市斤,是生产上急待解决的问题。经试验证明,凡开设纵沟排水的设施,不但达不到保持水土的目的,反而造成冲刷。水是可以控制的,把运动的水变成相对静止的水,把集中的水变成分散的水、就可以减少冲击
As far as I can observe, the water erosion in the cascade of tea gardens took place an average of more than 30 times in 1902.3 kg per mu. In particular, ditch edge erosion more serious than the park, a large amount of erosion 7.1 times per mu loss of water per year about 1.9 kg of total nitrogen, 0.6 kg of total phosphorus. About 8.5 in total potassium, 15 kilograms of humus, is the production of urgent problems to be solved. Proved by tests, the facilities for draining vertical drains not only fail to maintain the purpose of water and soil, but cause erosion instead. Water can be controlled, the movement of water into a relatively static water, the concentrated water into a dispersed water, you can reduce the impact