CAJ | 학술논문

为了揭示施肥对毛竹Phyllostachys pubescens林冠结构和光合能力的影响规律,研究了不同施肥处理下3年生毛竹从展叶到绿叶期的叶片大小、质量、分布状态和光合特性.结果表明:毛竹单叶面积、千叶质量和叶片分布受施肥的影响较小,是较为稳定的指标;展叶期施肥处理(处理1)能显著增加单株立竹的叶片数量,到7月底,其单株立竹叶片总质量和叶面积指数分别比绿叶期施肥(处理2)提高14.8%和13.7%,比不施肥(对照)提高27.6%和24.5%;冠层14～17档是单枝叶片数量最多的区域,施肥能增加各枝盘叶片的质量,但对林冠重心的分布无影响;单叶叶面积稳定后(6月),处理1的叶绿素测定值和光合速率显著高于处理2和对照,而处理2与对照间无显著差异.展叶期施肥通过叶片数量、叶面积指教和光合捕光色素含量的提高,增强了毛竹林光合能力.因此,建议在实际生产中于毛竹展叶期进行土壤养分补充.
위료게시시비대모죽Phyllostachys pubescens림관결구화광합능력적영향규률,연구료불동시비처리하3년생모죽종전협도록협기적협편대소、질량、분포상태화광합특성.결과표명:모죽단협면적、천협질량화협편분포수시비적영향교소,시교위은정적지표;전협기시비처리(처리1)능현저증가단주립죽적협편수량,도7월저,기단주립죽협편총질량화협면적지수분별비록협기시비(처리2)제고14.8%화13.7%,비불시비(대조)제고27.6%화24.5%;관층14～17당시단지협편수량최다적구역,시비능증가각지반협편적질량,단대림관중심적분포무영향;단협협면적은정후(6월),처리1적협록소측정치화광합속솔현저고우처리2화대조,이처리2여대조간무현저차이.전협기시비통과협편수량、협면적지교화광합포광색소함량적제고,증강료모죽림광합능력.인차,건의재실제생산중우모죽전협기진행토양양분보충.
Through pot experiment with single factor randomized block design, this paper studied the effect of fertilization in different times on canopy development and photosynthesis of Phyllostachys pubescens, the size, weight, and distribution of leaves as well as their photosynthetic characteristics from leaf-expansion to maturity were studied. Treatments were as follows: fertilization during leaf-expansion period, fertilization during green-leaf period, and no fertilizer(ek). Results showed that individual leaf area, thousand-leaf weight, and leaf distribution were relatively stable with little influence from fertilization. Fertilization during leaf-ex-pansion compared to the green leaf period significantly increased leaf number, leaf weight per plant, and leaf area index. Fertilization during leaf-expansion also significantly increased the total weight of leaves cor-responding to each branch. The 14th to the 17th branches had the largest number of leaves in the canopy with fertilization increasing the weight of each branch but not changing the center of the canopy. After June when individual leaf area was stable, chlorophyll concentration(SPAD value) and the photosynthesis rate of the leaf per unit area during leaf-expansion were significantly higher than the green leaf period and ok. Thus, for production, the bamboo forest should be fertilized in the leaf-expansion period.