摘要
为了探明微量元素对香榧生长与果实产量和品质的影响情况,2010~2012年在大田幼苗试验的基础上进行了结果树定位试验,研究了不同微量元素肥料的配施对香榧幼苗生长和结果榧树果实产量的影响情况。大田幼苗试验结果表明：B、Zn肥的单施及配施都能促进香榧幼苗的生长,单施B肥的肥效最好,其冠幅生长量比CK提高了52.07%。结果树定位试验结果表明：施用微肥能提高相应微量元素在土壤中的有效含量水平,香榧叶片与果仁中的Cu、Zn、B含量也均会相应提高;微肥配施能有效促进香榧增产和提高其果实品质,BZn Cu Mo配施的增产效果最为明显,BZn Cu Mo处理下香榧的果实产量比CK增加236.14%,BZn配施对其增产也有显著的影响,BZn配施下香榧的果实产量比CK增加177.40%。微肥一次性施用（2010年）后,除对当年土壤微量元素的有效性和香榧叶片与果仁中的微量元素含量均有明显作用外,还有后效。“常规喷施”多元液体肥料和BZn配施处理都能显著提高香榧果仁中的粗脂肪含量。文中因此认为,增施微肥可以有效协调土壤养分的平衡,改善香榧的营养状况,从而促进其生长,提高果实产量,改善果实品质。
In order to research effects of micronutrients on plant growth, nut yield and nut quality in Torreya grandis, a location test of bearing trees was done in 2010-2012 based on seedlings field experiments, effects of micronutrient fertilizers on seedling growth and nut yield in T. grandis were researched. The results showed that, single or combined application of boron （B） and zinc （Zn） could improve growth of T. grandis seedlings. Single B application had the best effect, and crown increment was increased by 52.07%compared with the control. Application of micronutrient fertilizers could improve available levels of corresponding nutrients in soil, and Cu, Zn and B contents in leaves and kernels were accordingly increased. Combined application of micronutrient fertilizers could effectively increase yield and enhance nut quality. Combined application of B, Zn, Cu and Mo had the obvious effects on increasing yield, and combined application of B and Zn could increase yield by 177.40%compared with the control. Micronutrient fertilizers applied only once in 2010, could have obvious effects on micronutrients contents in soil, leaves and kernels, and the effects could last. Both multi-element liquid fertilizer by conventional spraying and combined application of B and Zn could significantlyincrease crude fat content in kernel. Therefore, application of micronutrient fertilizers could effectively balance nutrients in soil, and improve nutrient status in T. grandis, so that to improve growth and nut quality and to increase yield.
出处
《经济林研究》
北大核心
2015年第3期33-38,共6页
Non-wood Forest Research
基金
国家自然科学基金项目(41201323)
浙江省农业新品种选育重大科技专项(2012C12904-12)
中央财政林业科技推广项目(〔2014〕TS001)
关键词
香榧
微肥
生长
产量
品质
Torreya grandis
micronutrient fertilizer
growth
yield
quality
