耕层土壤氮素供应强度变幅为8.8%－11.3%, 加权平均为10%。土壤氮素供应强度
因土壤类型而异, 棕壤土属、褐土土属、潮土土属氮素供应强度较高,为9.2%－9.8%;
砂姜黑土土属为8.2%;滨海盐土最低为7.5%。
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耕层土壤氮素供应强度变幅为8.8%－11.3%, 加权平均为10%。土壤氮素供应强度
因土壤类型而异, 棕壤土属、褐土土属、潮土土属氮素供应强度较高,为9.2%－9.8%;
砂姜黑土土属为8.2%;滨海盐土最低为7.5%。