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三要素定性施肥试验目的在于验证诊断结果,并摸索对症施肥与胶树产量的关系.经过三年的施肥试验,证实了我们诊断的结果是正确的,对症施肥有明显的增产效果,现将三年的试验结果总结如下.一、试验情况:试验于1978年7月布置在本所崎下岭,用66年定植的GT_1无性系开刈树作为试验材料.试验前测定土层0—20Cm土壤有机质2.242%,全N0.092%,速效P_2O_50.092ppm,速效K_2O109.6ppm;胶树叶片养分全N2.99%、全P0.193%、全K1.27%.对照营养诊断正常值,属NP缺、K丰富的树位.
The three elements of qualitative fertilization test is to verify the diagnostic results and to explore the relationship between symptomatic fertilization and plastic tree yield after three years of fertilization test confirmed that the results of our diagnosis is correct and symptomatic fertilizer has a significant yield increase effect, The test results of the year are summarized as follows: I. Test conditions: The experiment was conducted in Takasaki ridge, Takasago, Japan in July 1978. The GT_1 clonal mulberry tree planted in 66 years was used as the test material, and the 0-20 cm soil layer Organic matter 2.242%, total N0.092%, available P_2O_50.092ppm, available K_2O109.6ppm; plastic leaf nutrient full N2.99%, full P0.193%, full K1.27% .Control Nutrition diagnosis of normal, is a NP Miss, K Rich tree bit.