不同覆盖物对雷竹林笋生产的影响

Effects ofFloor-covering Material on the Shoot Production in the Stands of Phylostachs praecox Chu et Chao

采用随机区组设计，研究了８种覆盖物对林地土壤温度的调节和对雷竹林笋期、笋产量及竹林经济收益的影响。结果表明，８种覆盖物均提高了林地土壤温度，提早了始笋期，延长了产笋期，增加了竹林的笋产量与产值。经综合评定，若糠覆盖为最佳处理，与对照相比，其试验林地表层土壤（０～２５ｃｍ）温度提高３．８３℃，始笋期提早４１ｄ，笋期延长４０ｄ，产量、产值和纯收益分别增长２９．４％、２７０．３％和３１０．２％。

Adopting the method of randomized blocks design,the effects of eight kindsof floor-covering materials were studied in the stands of Phyllostachys praecox. The resultsshowed that the stand floor- covering increased the stand's soil temperature ,made the shootsemerge earlier and prolonged shooting period as well as raised shoot production and its val-ue. After comprehensively evaluation,rice chaff was the best material.As compared with thecontrol,it could raise the soil temperature 3.83℃ higher,shift the shooting time 41 days ear-lier,prolong shooting period 40 days more and raise the shoot production value and stand'seconomic benefit 29.4%,270.3%and 310.2%respectively。