论文部分内容阅读
蔬菜分类追肥,可以提高肥料的有效利用率,更充分地发挥肥效,降低种植成本,提高蔬莱的品质和产量。 一、叶菜类 如白菜、菠菜、芹菜等,均以食用嫩叶为主,因此追肥应以速效性氮肥为主。生长盛期,再适当增施磷、钾肥。如大白菜在莲座期和包心期,如果缺乏磷肥和钾肥,就不易结球。 二、瓜菜类 如黄瓜、南瓜、冬瓜、茄子、辣椒、西红柿及芸豆等,其食用部位是生殖器官,一般在幼苗期需氮较多,进入开花结果期则对磷的需求量剧增,而对氮的需求量则相对减少。以黄瓜为例,在新果期就应重视磷肥的施用,以后每结一批果,就要补施一次肥水(即将肥料溶于水中浇施),以促进黄瓜的优质丰产。
Vegetable classification Top-dressing, can improve the effective utilization of fertilizer, fertilizer more fully play to reduce planting costs and improve the quality and yield of vegetables. First, leafy vegetables such as cabbage, spinach, celery, etc., are mainly edible leaves, so the top-dressing should be quick-acting nitrogen-based. Growth period, and then an appropriate increase of phosphorus, potash. Such as cabbage in the rosette period and pericardium, if the lack of phosphate and potassium, it is not easy to catch. Second, the melon vegetables such as cucumber, pumpkin, wax gourd, eggplant, peppers, tomatoes and kidney beans, the edible parts of the reproductive organs, usually in the seedling stage more nitrogen, into the flowering period of the demand for phosphorus surge, While the demand for nitrogen is relatively reduced. To cucumber, for example, should pay attention to the application of phosphate fertilizer in the new fruit period, after each batch of fruit, it is necessary to make a fertilizer (fertilizer is dissolved in water pouring) to promote high-yield cucumber.