【摘要】：研究了外源性氮和磷對(duì)藜蒴(Castanopsis fissa)凋落葉的分解速率、分解過(guò)程中N、P、K含量的變化,有助于了解外源性N、P和N+P影響藜蒴凋落葉分解的機(jī)理,以便為科學(xué)合理經(jīng)營(yíng)藜蒴人工林提供科學(xué)依據(jù)。在廣東云勇林場(chǎng)的藜蒴林地采用尼龍網(wǎng)袋分解法,設(shè)置了對(duì)照(CK)、施N(10 g·m-2)、施P(5 g·m-2)、施N+P(10 g·m-2+5 g·m-2)4種處理。結(jié)果表明:施N和N+P阻礙了凋落葉的分解,施P促進(jìn)了凋落葉的分解。24個(gè)月后,對(duì)照、施N和P處理的凋落葉N含量顯著大于凋落葉初始N含量;除施N處理外,其余處理的凋落葉P含量顯著大于其初始P含量,其中施P和N+P使凋落葉的P含量大幅上升;凋落葉K含量在整個(gè)分解過(guò)程中波動(dòng)較大。
[Abstract]:The decomposition rate of (Castanopsis fissa) litter by exogenous nitrogen and phosphorus and the changes of N, P and K contents in the decomposition process were studied, which was helpful to understand the mechanism of exogenous N, P and P affecting the decomposition of capsule litter. In order to provide scientific basis for scientific and rational management of capsule plantation. Four treatments, N (10 g 路m ~ (- 2), P (5 g 路m ~ (- 2) and N P (10 g 路m ~ (- 2) 路m ~ (- 2), were used in the resveratrocapsule forest land of Yunyong Forest Farm, Guangdong Province. The results showed that the application of N and N P hindered the decomposition of litter, and the application of P promoted the decomposition of litter. After 24 months, the N content of litter treated with N and P was significantly higher than that of initial N content of litter. Except for N treatment, the P content of litter leaves in other treatments was significantly higher than that in the initial P content, and the P content in litter leaves increased significantly with the application of P and N P, and the K content in litter fluctuated greatly in the whole decomposition process.
【作者單位】： 華南農(nóng)業(yè)大學(xué)林學(xué)與風(fēng)景園林學(xué)院;
【基金】：中央財(cái)政林業(yè)科技推廣示范項(xiàng)目“廣東省生態(tài)公益林培育技術(shù)推廣”(2015-GDTK-07)
【分類號(hào)】：S714

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