设计6种不同施肥处理,探索不同处理对板栗(Castanea mollissima)结果性状、光合指标和主要营养成分的影响.结果表明,不同施肥处理对单位面积果枝数、每母枝果枝数、每果枝蓬数、单位面积蓬数和板栗叶片净光合速率无显著影响,不同施肥对结果性状和光合指标影响不显著的原因可能是萌芽期到花期,即3～5月的持续干旱,肥料未被板栗树充分吸收利用.对6种施肥处理的八月红主要营养成分的LSD检验和模糊分析表明,处理B和F有利于营养物质积累,C、D次之,A、E最差.尽管处理F施肥量比处理B多,但持续干旱少雨导致土壤肥料未被充分吸收,而叶面喷施肥料更能被叶片吸收利用,因此这两种施肥对罗田板栗的营养成分积累差异不显著.%The bearing habits, photosynthetic indexes and the main nutrients were studied and analyzed by designing of 6 different fertilization treatment programs. The result showed that there was no different significant influence among the 6 fertilization treatments and the control in leaf net photosynthetic rate, the number of fruiting branches and blumes per unit area, and the number of fruiting branches and blumes per fruit cane. The possible reason was that the drought in the period from seedling emergence stage to flowering, which lasted nearly 3 months from March to May, caused fertilizer not be fully absorbed by the chestnut tree. The results of LSD test and fuzzy analysis indicated that treatment B and F were conducive to the accumulation of nutrients, followed by C and D, the worst were treatment A and E. The fertilization dose of treatment F was more than B, but continuous dry weather led fertilizer not fully absorbed. However, fertilizer spraying on the leaf was more easily absorbed. Therefore the two treatments had no significant differences on the nutrients accumulation of Chinese chestnut.
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