不同耕作方式对茶园土壤理化性质和养分的影响

Effects of Different Tillage Methods on Physical,Chemical Properties and Nutrient of Soil in Tea Plantation

以不耕作为对照，研究了不同耕作方式对茶园土壤理化性质和养分含量的影响。结果表明：中耕、手扶深耕、拖拉机深耕2—4个月后土壤相对含水量和土壤容重较对照低，但茶园的根系干重以及20～40cm土层的碱解氮、速效磷、速效钾含量均有所增加。说明合理耕作有利于茶树根系生长和茶园土壤养分的均衡；使用耕作机对茶园进行深耕、中耕均是可行的。

Taking no tillage as the check, we studied the effects of different tillage methods on the physical, chemical prop- erties and nutrient of soil in tea plantation. The results indicated that： during 2 ~ 4 months after tea plantation was tilled by differ- ent methods （ intertillage, deep ploughing by hand, or deep ploughing by tractor） , in comparison with the check, the soil relative water content and bulk density were decreased, while the tea mot dry weight, and contents of available nitrogen, available phos- phorus and available potassium in 20 ~ 40-cm soil layer of tea plantation were increased. The above results suggest that reasonable tillage is in favor of the tea root growth and tea garden soil nutrient equilibrium, and deep plowing and intertillage by using tillage machine are feasible in tea garden.