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为探讨柑桔施用长效复合肥料的增产效果。我们于1984年至1986年的三年间,对脲醛复合肥料进行了定株试验观察。现将结果整理如下。 一、试验方法 试验设施用期和施用量二个部分: (一)施用期试验 设以下四个处理: 1.氮磷钾混合化肥作促花、壮果、采后肥三次施入; 2.脲醛复肥二年分三次施入,施用时期同上; 3.脲醛复肥一年分二次,作促花、采后肥施入; 4.脲醛复肥作促花肥一次施入。 试验树为1979年定植。每年株施的脲醛
In order to explore the long-acting citrus application of compound fertilizer yield. We in 1984 to 1986 in the three years, urea-formaldehyde compound fertilizer plant test was observed. The results are now organized as follows. First, the test method The duration of the test facility and the application of two parts: (A) the application period The test is set to the following four treatments: 1. N, P and K mixed fertilizer for promoting flower, strong fruit, postharvest fertilizer three times; Urea-urea compound fertilizer applied in two years in three times, the same period of application; 3. urea-formaldehyde compound fertilizer twice a year, for promoting flowers, after the fertilizer into the; 4. Urea complex fertilizer to promote fertilization once applied. The experimental tree was planted in 1979. Urea-formaldehyde plants each year