一、适期施用氮肥在落花后的6月上旬和9月上旬采果后,每亩各施入4公斤纯氮,对提高单穗重、粒重、着色和提高产量,都有显著效果。但应注意在落叶期和发芽期尽量少施氮肥,减少开花时树体内氮的浓度,以防止落花落粒,达到提高品质和产量的目的。 First, the appropriate application of nitrogen Fertilizer in the early June after deciduous and early September after picking fruit, each applied to 4 kg of pure nitrogen per acre, to improve single spike weight, grain weight, coloring and increase yield, have a significant effect. However, it should be noted that nitrogen fertilizer should be applied as little as possible during the period of defoliation and germination to reduce the concentration of nitrogen in the tree during flowering so as to prevent the falling of flowers and grains and achieve the purpose of improving quality and yield.