Experiment of four different formulations of organic fertilizers on cold injury of young and half-mature rubber clones IAN873 was carried out in 2011. The results have revealed that the content of stem thickening is obviously higher than control (3 kg fish meal + supcrphosphate + organic fertilizer) and fertilizer A (3 kg peanut bran + superphosphate + organic fertilizer) treatment under treatment of fertilizer C (2.3 kg fish meal + superphosphate + urea + functional fungi + organic fertilizer) in tested cold injury of young and half-mature rubber trees, and the difference was obvious by fertilizer D (3 kg peanut bran + fish meal + superphosphate + organic fertilizer) treatment, but the trees look at the growing extent of fertilizer C treatment was significantly better than the other fertilizer treatments.%对2011年橡胶IAN873品系中小苗寒害树的4种不同配方有机肥的肥效进行试验．结果表明：肥料C（鱼粉＋磷肥＋尿素＋功能菌＋有机肥，施2．3kg／株）处理的橡胶中小苗寒害树的茎增粗显著高于常规施肥（鱼粉＋磷肥＋有机肥，施3kg／株）和肥料A（花生麸＋磷肥l＋有机肥，施3kg／株）处理，与肥料D（花生麸＋鱼粉＋磷肥＋有机肥，施3kg／株）处理差异不明显，但从树体长势程度来看肥料C处理显著优于其它肥料处理。
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