论文部分内容阅读
前言默科特桔(murcott)是澳大利亚昆士兰州柑桔产区的一个主栽晚熟品种,因果实纯收入高而栽培面积迅速增加。该品种由美国佛罗里达州引入,虽然其起源不清楚,但许多园艺工作者认为它是一个桔和橙的杂种(Hodgson,1967)。默科特桔树有严重隔年结果习性,常因此引起树势衰弱、干枯.有时全树死亡。默科特桔在大年之后,次年花量减少,座果不多。为此,Stewart等(1968)在佛州进行过调查,他们认为导致默科特桔形成大小年的主要原因是缺乏营养物质,尤其
Introduction Murcott is a cultivated late-maturing variety of citrus growing areas in Queensland, Australia, with high net income of fruit and growing area of cultivation. Introduced in Florida, USA, the cultivars, although of unknown origin, are considered by many horticulturists as hybrids of orange and orange (Hodgson, 1967). Merck orange trees have severe habitual results next year, often resulting in weak, dry tree sometimes death of the entire tree. Murcott orange in the New Year, the next year to reduce the amount of flowers, few fruit. To this end, Stewart et al. (1968) conducted a survey in Florida, they believe that the main reason leading to the size of Merlotte orange is the lack of nutrients, especially