【摘要】 为了探明油茶树体对疏剪的反应,为油茶的科学修剪提供理论依据和指导,研究了不同疏剪强度处理对油茶新梢生长及矿质元素分配的影响。结果表明,不同强度的疏剪显著影响了油茶新梢的发枝量,疏剪强度越大,发枝量越小;疏剪处理显著提高了新梢的长度,改变了不同长度新梢的比例,高强度的疏剪提高了长梢(>10 cm)的比例,降低了短梢(<5 cm)比例。此外,疏剪处理改变了不同组织器官矿质元素的含量和分配,一定程度上提高了新梢和枝干间氮、磷、钾元素含量的比值;1/4强度疏剪对促进新梢萌发、平衡长短梢比例、改善新梢矿质元素含量效果最佳。更多还原

【Abstract】 The paper aims to clarify the response of oil-tea Camellia to thinning treatment and provide a theoretical basis for pruning of oil-tea Camellia.The authors studied the effect of different thinning quantities on spring shoot growth and mineral elements distribution of oil-tea Camellia.The results showed that:the number of spring shoots were influenced significantly by different thinning treatments;the higher the thinning quantity,the less the spring shoots germinated;the length of spring shoots was increased and the ratio of spring shoots with different length was affected by different thinning treatments;high quantity thinning treatment increased the proportion of long spring shoots(>10 cm)and decreased the proportion of short spring shoots(<5cm).In addition,the different thinning treatments changed the content and distribution of mineral elements in different tissues and increased the ratio of N,P,K content in spring shoot and branch to some extent.To sum up,1/4 thinning quantity is the best treatment to promote the spring shoots germination,keep the balanced length of shoots and improve the content of mineral elements in shoots.更多还原