死皮康复营养剂恢复橡胶树热研7-33-97死皮植株产胶能力的效果分析

以橡胶树无性系热研7-33-97为试验材料,分析了死皮植株在施用死皮康复营养剂,复割后的产胶情况,以评价死皮康复营养剂的施用效果。结果表明,死皮恢复植株在复割后的3 a中,干胶含量变化不大;2014~2016年,死皮指数总体呈上升趋势,分别为15.33、24.55和33.07,而年平均单株干胶产量则呈下降趋势,分别为55.67、44.22和35.53 g/(株·刀),二者变化趋势相反。从恢复植株和正常树月平均单株干胶产量的比较结果来看,除2015年7月外,其余各月恢复植株平均单株干胶产量均高于正常树,而年平均单株干胶产量二者均呈逐年下降趋势,但恢复植株干胶产量均高于同年份的正常树,2014年、2015年和2016年正常树平均单株干胶产量分别为37.71、32.27和26.75 g/(株·刀),分别低于恢复植株约18、12和9 g/(株·刀);恢复植株各月和各年份平均单株干胶含量均高于正常树。这些结果说明,死皮康复营养剂对橡胶树死皮具有较好防治效果,且具有一定的生产持续性。

Effects of TPD ( Tapping Panel Dryness) Recovering Nutrient on the Latex Production of TPD Trees of Reyan 7-33-97 in Hevea brasiliensis

In order to evaluate the effect of TPD recovering nutrient, the latex production of recovering rubber trees ( Hevea brasiliensis) was analyzed after the TPD trees of Reyan 7-33-97 were sprayed with the TPD recovering nutrient. The results showed that the dry rubber content of the recovering trees did not change much during three years of recovering tapping. The TPD index of recovering trees had a rise trend from 2014 to 2016, i.e. 15.33, 24.55 and 33.07, respectively. In contrast, the average dry rubber yield per tree had a decrease tendency, i.e. 55.67, 44.22 and 35.53 g/tree·tapping, respectively. From the comparison between recovering trees and healthy ones, the monthly average dry rubber yield per tree of the recovering trees was higher than the healthy ones except in July 2015. In addition, the annually average dry rubber yield per tree of both recovering and healthy trees was decreased, and the dry rubber yield of the recovering trees was higher than the healthy ones. The average dry rubber yield of healthy trees was 37.71, 32.27 and 26.75 g/tree·tapping, which was 18, 12 and 9 g/tree·tapping lower than recovering ones in 2014, 2015 and 2016, respectively. The average dry rubber content per tree of the recovering trees was all higher than the healthy ones both in the month and year scales. All these results demonstrated that the recovering nutrient had a good effect on the continuous production of TPD affected rubber trees.