毛竹(Phyllostachys edulis)原产中国,主要分布于黄河流域,后被引种至世界多个国家.毛竹具有较高的生物资源多样性,主要体现在表型多样性和遗传多样性两方面.1)毛竹与其种下的23种变种和栽培变型间、毛竹天然居群间以及毛竹各种源间均显示出丰富的表型多样性,但其多样性变异趋势与地理位置趋势不一致,可能是由毛竹的居群间的交叉和种源之间相互引种导致的.2)多种分子标记技术分析表明毛竹作为一
对狮山公园竹资源进行了摸底调查,结果表明:园内现存竹种18 属99 种(含4 个变种),其中占广西区系50％以上的有13 个属,占全国区系50％以上的有3个属;通过区系分析认为,合轴丛生中型竹类占首位,含8 属63种,分别占园内总数的44.4％和64.6％;目前,园内现存广西特有竹种6属11种,其中,簕竹属特有竹种占种;最后,提出狮山公园竹资源保护策略.
以冬季地表覆盖增温为核心的雷竹雷早产高效栽培技术在我国亚热带地区的雷竹(Phyllostachys praecox)栽培地区被广泛应用.为探明雷竹覆盖物(稻草和竹叶)的分解速率及在分解残余物中硅含量的动态年变化规律,在浙江临安市雷竹主产区采用分解管法进行了覆盖物分解试验.试验结果表明,稻草、竹叶的月平均分解速率分别为8.50％和11.89％,在1a 内分别分解了67.54％和79.30％.稻草、竹
在研究秋季覆盖技术中,发现了早出覆盖温差规律.按照温差规律,找到了近10多年来秋季覆盖失败的原因.为验证温差规律,在临安东部太湖源镇横徐村进行了秋季温差覆盖试验,取得了较好的试验效果.本文提出了早出覆盖温差规律与竹鞭生长休眠规律.根据温差规律,覆盖时间越早,气温越高,则覆盖的温度也越高.冬季覆盖与秋季覆盖均遵循温差规律,温差规律遵循竹笋自然生长温度规律.在竹鞭生长休眠之前进行覆盖,竹林多少会翘鞭而
Phosphorus accumulation and losses were measured in the soils in Lei bamboo (Phyllostachys praecox) stands located in the upper reaches of Taihu Lake to determine evolution trend of soil P and its lea
Purpose Forest ecosystems play an important role in sequestering carbon in their biomass and soils.Moso bamboo plantations,as a special forest type,are mainly distributed in southern China.There is li
Purpose Heavy winter mulch treatments are commonly practiced in Phyllostachys praecox bamboo forests to increase bamboo shoot production in early spring in subtropical China.The aim of this study was
Intensive forest management practices,such as fertilization,tillage,and understory removal,could markedly change the soil organic carbon (SOC) stock and labile organic carbon (C) pools.However,the com
Carbon (C) occluded in phytolith (PhytOC) is a stable form of C;when PhytOC is returned to the soil through litterfall it is stored in the soil and that can be an effective form for long-term C seques