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研究了常规经营下山核桃林土壤养分的渗漏流失规律。结果表明:山核桃渗林漏水中可溶性氮流失是氮素渗漏流失的主要形式,平均可溶性氮含量为10.17 mg/L,占全氮含量的86.3%,其中可溶解性氮峰值达到17.56 mg/L;总磷、可溶性磷平均含量分别为0.65、0.45 mg/L;阳离子渗漏流失c(Ca2+)>c(K+)>c(Mg2+)>c(NH4+);施肥影响渗漏水中养分的浓度,6月初施肥后,各养分输出动态过程可以分为前期浓度出峰期和后期浓度下降稳定期,直至8月底再次施肥,N浓度明显升高,P浓度则不变。
The law of leakage and loss of soil nutrients in Hyphantryia manilensis forest was studied. The results showed that the loss of soluble nitrogen was the main form of nitrogen leakage, the average soluble nitrogen content was 10.17 mg / L, accounting for 86.3% of the total nitrogen content, and the soluble nitrogen peak value reached 17.56 mg / L; the content of total phosphorus and soluble phosphorus was 0.65 and 0.45 mg / L, respectively; the leakage of cations was affected by the leakage of c (Ca2 +)> c (K +)> c (Mg2 +)> After the fertilization in early June, the dynamic process of each nutrient output can be divided into the early peak concentration and the late phase concentration decreased stable period until the end of August fertilization again, N concentration was significantly increased, P concentration was unchanged.