论文部分内容阅读
1978～1981年,在抚顺郊区上砖大队果园,对11年生及4年生山楂树,在土壤、肥料、修剪和病虫害防治同一综合措施管理下进行了花期喷赤霉素试验。其结果对提高着果率、增大果个和提高单株产量有明显的效果。最佳使用浓度和喷药次数筛选结果表明,山楂树花期喷一次50ppm赤霉素效果较好,成本低,药液便于配制(1克赤霉素用10毫升酒精浸溶,兑水40斤)。但是应当注意,连年喷赤霉素,当负载量超过山植树体可能的负担量时,仍会出现大小年现象。
From 1978 to 1981, blossoming in the brome orchards on the outskirts of Fushun, 11-year-old and 4-year-old hawthorn trees, soil, fertilizer, pruning and pest control under the same comprehensive management of the bloom blight test. The results have a significant effect on increasing the fruit rate, increasing the fruit yield and increasing the yield per plant. The optimum concentration and spraying times showed that the hawthorn sprayed with 50ppm gibberellin had a better effect at a low cost and the liquid was easy to formulate (1 g of gibberellin was soaked in 10 ml of alcohol and watered 40 kg) . It should be noted, however, that year after year of gibberellin, size-year-old phenomena can still occur when the load exceeds the possible burden of mountain tree planting.