云南省不同营养类型橡胶树专用肥施用效果研究

Effects of Specialty Fertilizer on Different Rubber Types in Yunnan Province

针对割胶制度改革后,云南植胶区橡胶树出现的主要营养类型拟定的4种橡胶树专用肥配方,开展施肥效果研究。3年的试验结果表明,正常型、缺氮磷型、缺钾型、缺镁型4种橡胶树专用肥比常规施肥增产效果好、经济效益高,年平均干胶净增产率依次为3.41%、8.69%、5.15%、7.88%;年平均净增产干胶为68、193、119、137 kg/hm2;年平均盈利依次为1682、4375、2690、3362元/hm2。橡胶树营养状况改善,叶片N、P、K、Ca、Mg元素含量趋于平衡,缺素症状得到缓解。

To explore the effects of four types of rubber fertilizer according to the primary nutrients types in Yunnan rubber cultivated region after the reform of tapping systems,this study lasted 3 years and the results showed that the production of normal type,nitrogen phosphorus deficiency type,potassium deficiency type,magnesium deficiency type rubber tree applying rubber fertilizer were higher than that of conventional fertilizer; The dry latex net rate of growth were 3. 41 %,8. 69 %,5. 15 % and 7. 88 %,respectively,and the net production of dry latex were 68,193,119 and 137 kg / hm2,respectively; The profits were 1682,4375,2690 and 3362 RMB /hm2,respectively. Meanwhile,the nutritional status of rubber tree were improved and the contents of N,P,K,Ca and Mg in leaves were balanced as well as the nutrient deficiency symptoms was improved.