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在广义上,胶树正常机能的失调,都可以说是患病。生理活动的中断或组织形成的紊乱,不一定在任何情况下都是由真菌或细菌引起的。缺水或缺养分,水分和养分过多,高温或强光,以及由工具、风、火、闪电或化学剂等所造成的伤害,也能破坏植株的正常机能,或诱致植株的生长反常。象这些非生物因子所引起的失调和伤害,可以分为生理失调、气象条件为害或药害等类别。一、生理失调(一)褐皮病胶园经常发生褐皮病。它通常是由排胶过度所引起,而流行于某些高产无性系和无性系实生树。1.征状部份割线干枯是这种病害的最初的典型征状。然后,割线变色,同时割线下的
In a broad sense, the normal functioning of gum trees can be said to be diseased. Disruption of physiological activities or tissue disorders, not necessarily in any case caused by fungi or bacteria. Water or nutrient deficiencies, excessive water and nutrients, heat or glare, as well as injuries caused by tools, wind, fire, lightning or chemical agents can also disrupt the normal functioning of plants or cause them to grow abnormally. The disorders and injuries caused by these abiotic factors can be classified into the categories of physiological disorders, meteorological conditions or injury. First, the physiological disorders (A) Beige leather Park often brown skin disease. It is usually caused by overdosing but popular in some high-yielding clones and clonal tree. 1. Symptoms of secant dryness is the first typical symptom of this disease. Then, the secant is discolored, while the secant is under