热带作物学报2012，Vol.33Issue(9)：1529-1534,6.DOI:10.3969/j.issn.1000-2561.2012.09.001
海南橡胶树胶木兼优热垦525的营养诊断指标研究
Establishing Nutrition Diagnosis Index of Rubber Latex/Timber Clone Reken 525 in Hainan
摘要
Abstract
In order to provide a reference for rationed application of fertilizer, high yield and stable yield of the latex/timber clone, nutrition diagnosis gradation index system of the latex/timber clone Reken 525 were established. Based on the 2 years "3414" field experiments of Longjiang, data were analyzed by the method of nutrition plentiful-lack index. Soil total nitrogen (TN), available phosphorus (AP), available potassium (AK) and leaf total nitrogen (LTN), available potassium (LAK) were classified as low, medium and high based on the relative yield of 70% and 90%. The results indicated that the soil nutrient was classified by low when TN < 0.6 g/kg, AP < 2.0 mg/kg, AK < 50 mg/kg. The soil nutrient was classified by medium when TN was about 0.6-0.8 g/kg, AP 2.0-3.5 mg/kg, AK 50-70 mg/kg. The soil nutrient was classified by high when TN > 0.8 g/kg, AP > 3.5 mg/kg, AK > 70 mg/kg; The leaf nutrient was classified by low when LTN < 28 g/kg and LAK < 8 g/kg. The leaf nutrient was classified by medium when LTN was 28-33 g/kg and LAK 8-11 g/kg. The leaf nutrient was classified by high when LTN > 33 g/kg and LAK > 11 g/kg. The best time to use leaf for nutritional diagnosis was July, August and September. Therefore, establishing nutrition diagnosis index of latex/timber clone based on " 3414" field experimental data was practicable.关键词
橡胶树/胶木兼优/"3414"试验/营养诊断指标Key words
Rubber tree/ Latex/timber clone/ "3414" field experiments/ Nutrition diagnosis index分类
农业科技引用本文复制引用
王大鹏,吴炳孙,何鹏,吴敏,覃怀德,韦家少..海南橡胶树胶木兼优热垦525的营养诊断指标研究[J].热带作物学报,2012,33(9):1529-1534,6.基金项目
海南省自然科学基金项目(No.309046) （No.309046）
中央级科研院所基本科研业务费(No.RC201203,1630022011018). （No.RC201203,1630022011018）
