【摘要】 针对橡胶树专用肥多为低浓度肥料,养分含量低,运输成本和施肥劳力成本高等问题,研制了橡胶树新型高浓度专用肥,并采用生产型对比法进行肥料效应试验。连续3年观测橡胶树产量、增粗、树体营养及胶园土壤养分含量等情况,结果表明:施用橡胶树新型高浓度专用肥比常规施肥使开割树产量增加117.9 kg/hm~2,平均增幅为8.90%,中小苗增粗增加了0.45 cm/株,平均增幅为8.28%,但都未达到显著水平;树体营养方面,试验区整体上略优于对照区;胶园土壤养分方面,试验与对照的全氮、速效钾、速效磷、有机质含量及pH基本相等,差异较小。更多还原

【Abstract】 A new high-concentration fertilizer was developed in response to the issues of low nutrient content in fertilizer, and high transportation and labor cost. A fertilizer trial for this new highconcentration fertilizer was conducted in rubber plantations with commercial fertilizer as control to observe rubber yield, girth growth, rubber tree nutrition and soil nutrient content for 3 years in a row.The results showed that the opened rubber trees treated with the new high-concentration fertilizer yielded 0.524 kg/mu(7.86 kg per 1/15 ha) or 8.90% higher than the control, and that the girth growth of the immature rubber trees increased by 0.45 cm/tree or 8.28% as against the control. The yield and girth increment was not significantly different between the new high-concentration fertilizer and the control.The rubber trees in the rubber plantations treated with the new high-concentration fertilizer had higher nutrition than those in the control, and the soil contents of total nitrogen, available potassium, available phosphorus, organic matter and pH in the rubber plantations treated with the new high-concentration fertilizer were similar to those in the control, with little difference between the treatment and the control.更多还原