论文部分内容阅读
黄瓜秧定植前后,瓜蔓顶端伸长受阻,腋芽过早地形成花芽,龙头上顶着花簇,是植株停止生长的现象,称之为“花打顶”。这是一种因管理不当而造成的生理性病害,它会推迟结瓜、采收、上市时期,降低黄瓜的品质和产量。造成此生理病害的原因主要是温度、湿度控制不当以及肥料施用不当所致。其防治对策应该针对成因,加强管理,防治结合。(1)气温方面气温较长时间的偏低是造成“花打顶”的原因之一。黄瓜生长的适温为20—25℃,叶片及绿色部分在阳光下进行光合作用,水和二氧化碳为原
Cucumber seedlings planted before and after the top of the melon elongation is blocked, axillary buds to form flower buds prematurely, the faucet on the flowers, is the phenomenon of the plant to stop growing, call it “flower topping.” This is a physiological disease caused by improper management, it will postpone the fruiting, harvesting, listing period, reduce cucumber quality and yield. The main cause of this physiological disease is temperature, humidity, improper control and improper use of fertilizer. The prevention and control measures should focus on causes, strengthen management, prevention and treatment. (1) the temperature is relatively low temperature for a long time is one of the causes of “tops”. The suitable temperature for cucumber growth is 20-25 ° C, photosynthesis of the leaves and the green part in sunlight, water and carbon dioxide are the original