合理施肥是保证李树生长发育和丰产稳产的重要措施,是根据树体各生长期需求确定施肥种类和数量,满足树体生长所需要养分,提高座果率,增大果实,增加产量。同时还保证结果期的营养生长,促进花芽分化,达到稳产高产。 一、抓准施肥时期 施肥是在树体营养需求时期,人为采取的技术措施,满足树体生长需求。要抓住李树年生长发育周期中对高产、稳产、优质的关键时期及时施用。一年中,以开花座果、果实膨大、花芽分化、树体恢复、秋季积累营养进入休眠最为关键。 1.花前肥:大地回春之后,李树萌动生长,开花座果,幼果膨大,需要消耗大量的养分,但是所消耗的营养主要是前年秋季积累的,当时根系所吸收的营养十分有限。因 Reasonable fertilization is an important measure to ensure the growth and yield of plum tree. It is to determine the types and quantities of fertilizers according to the needs of tree growth stages, to meet the nutrient requirements of tree growth, to increase the fruit set rate, to increase the fruit yield and to increase the yield. At the same time also ensure that the results of vegetative growth and promote flower bud differentiation, to achieve stable and high yield. First, grasping fertilization period Fertilization is the nutritional needs of trees in the period, man-made technical measures to meet the growth needs of trees. To seize the growth and development cycle of Li Shu in high yield, stable yield, high-quality key period of timely application. One year, to flowering fruit, fruit enlargement, flower bud differentiation, tree recovery, the accumulation of nutrients in the fall into sleep the most crucial. 1. Flower pre-fat: After the earth rejuvenation, plum blossom moving growth, flowering fruit, young fruit enlargement, the need to consume a lot of nutrients, but the nutrition consumed mainly accumulated the previous autumn, when the root absorption of nutrients is very limited. because