摘要
以采自12个农场的461个代表性叶片样品测试结果为依据,对广东茂名植胶区橡胶树镁素营养现状进行全面分析和评价,并在该区193个生产队展开橡胶树施用镁肥的大田试验。结果表明:茂名植胶区99.84%的橡胶树叶片镁含量低于正常指标值,全区橡胶树普遍处于镁素营养缺乏的状态;缺镁橡胶树施用镁肥后,镁素营养改善在不同品系存在一定差异;橡胶树中小苗施镁肥后,树围增粗比施镁肥提高9.31%;缺镁橡胶开割树施镁肥后,年产量比对照提高0.21kg/株,增产效果显著。
Leaf magnesium (Mg) content of rubber trees was analyzed and evaluated based on the test results of 461 representative leaf samples collected from 12 rubber state farms in Maoming rubber tract, and a field experiment of applying Mg fertilizer to rubber tree was carried out in 193 rubber production units in this area. The results showed that the leaf Mg content in 99.84 percent of the samples was below the minimum normal magnesium diagnostic index, indicating that the leaf Mg in rubber trees was low in the whole region. Mg fertilizer application showed that there were some differences in improvement of Mg content among rubber clones. Immature rubber trees when applied with Mg fertilizer were higher in stem girth (increasing by 9.31%) than the control without Mg fertilizer application, and the mature trees dressed with Mg fertilizer yielded significantly higher (an increase of 0.21 kg/tree) than the control without Mg fertilizer dressing.
作者
李彭怡
郑美漩
梁秀球
谢黎黎
郭振粤
韦瑞英
LI Pengyi;ZHENG Meixuan;LIANG Xiuqiu;XIE Lili;GUO Zhenyue;WEI Ruiying(Research Institute of Tropical Crop Science,Guangdong State Farms,Huazhou,Guangdong 525145;Maoming Mingfu Biotechnology Co. Ltd..,Huazhou,Guangdong 525145)
出处
《热带农业科学》
2019年第8期1-4,共4页
Chinese Journal of Tropical Agriculture
关键词
橡胶树
镁素营养
叶片镁含量
镁肥
Hevea brasiliensis
magnesium nutrient
leaf magnesium content in rubber tree
magnesiumfertilizer
