论文部分内容阅读
1.幼树促长促花技术。为加速成形,提高前期产量,杏幼树必须具有一定的营养生长基础。应本着前促后控的原则,加强对幼树的管理,做到促长与促花的统一。①要及时抹除砧木萌蘖,若是半成品苗芽抽梢后要绑设支架,防止折劈,并注意及时防治金龟子、浮尘子等危害。②肥水管理:4～6月份,是新梢旺长初期,每10～15天追施1次尿素和磷酸二氢钾,比例为5～6:2～3,视树体大小,每株追施尿素20～50克,一直持续到7月上中旬。叶面喷肥每隔10天左右1次,以尿素为主,浓度为0.2～0.3%,搭配光合微肥或其它叶面肥料。如果苗木新梢生长弱,可在新梢速长初期喷布一次40～60ppm的赤霉素。③摘心促进成形:当新梢生长至20～30ccm时,将其摘心,以促发二次枝。④合理采取促花的土肥水管理措施;
1. Sapling promote flower promotion technology. In order to speed up the forming and increase the pre-production, apricot saplings must have some nutrition growth foundation. Should be based on the principle of pro-control, to strengthen the management of saplings, to promote the unity of promoting growth and promoting flowers. ① timely wipe out the rootstock sprout, if the semi-finished shoots sprouting shoot to tie the stent to prevent the split, and pay attention to the timely prevention and treatment of chafers, floating dust and other hazards. ② Fertilizer and water management: From April to June, it is the initial stage of new shoots, which is topdressing urea and potassium dihydrogen phosphate every 10 ~ 15 days with the ratio of 5-6: 2-3, depending on the size of the tree, Urea 20 ~ 50 grams, continued until mid July. Foliar spray every 10 days or so 1 times to urea-based, the concentration of 0.2 to 0.3%, with photosynthetic fertilizer or other foliar fertilizer. If the seedling shoot growth is weak, you can spray a 40-60ppm GA3 in the early shoots. ③ topping to promote shape: When the shoots grow to 20 ~ 30ccm, the topping will be to promote secondary branches. ④ reasonable to take to promote flower soil water management measures;