湟中县国有苗圃树木的合理施肥

树木生长发育所需的各种条件都适宜时,合理施肥就有显著增产效果,只有在真正掌握各树木对肥料的需求与合理施肥时,才能达到提高肥料利用率和提高经济效益的目的。阐述了湟中县国有苗圃树木施肥原则、肥料用量和施肥方法。

基于改进PointNet++模型的苗圃树木点云分类与分割

激光点云技术可用于苗圃树木生长状态监测与管理,为农业植保机器人提供有效的靶标信息。为了进一步提高树种分类和树冠、树干内部分割的精准性,提出一种基于改进PointNet++的激光点云苗圃树木分类与分割方法。首先,调整PointNet++深度网络邻居点云的相对特征值,同时融合三维点云的低维和高维特征,充分利用各层级点云的特征。然后,将坐标注意力模块与注意力池化融合,进一步增强局部特征提取的能力,提高分类和分割的准确性。最后,针对苗圃常见树木自制了包含7类苗圃景观树木点云的数据集并用于实验。实验结果表明,提出的树种识别方法总体精度可达92.50%,平均类别精度为94.22%;提出的树冠、树干分割方法的平均交并比为89.09%。所提方法在分类和分割性能方面均明显优于经典的PointNet和PointNet++,能够为苗圃树木检测识别和农业机器人作业提供更精确的信息。

西梅盆栽技术

我国观赏栽培历史悠久,早在公元前5世纪,宫廷贵族就已时兴,西汉初(公元117年),已有相当规模的观赏果园出现。过去只有极少数人享受的观赏果树,现在到了平民百姓家,到了城市的街头和村庄的“四旁”。“观赏果树”热已经出现在中华大地,观赏树木苗圃、观赏果园、果树盆栽和盆景的产业在不断壮大。盆栽果树已是家庭园艺的一个重要组成部分,也是一大流行趋势。

Treatments Comparison of Mineral and Bio Fertilizers in the Apple and Sour Cherry Organic Nursery

Maiden trees of apple cultivars ＇Topaz＇ and ＇Ariwa＇ grafted on M26 rootstock and of sour cherry cultivars ＇Debreceni Botermo and ＇Sabina＇ on mahaleb cherry （Prunus mahaleb L.） were fertilized with bioproducts such as： Fertigo-granulated manure, Micosat-microbial inoculum consisting of mycorrhizal fungi; Humus UP-an extract from vermicompost; Humus Active ＋ Aktywit PM-an extract from vermicomposts with PM （Positive Microorganism）; BioFeed Amin--a plant extract reinforced with amino acids; BioFeed Quality-a seaweed extract reinforced with humic and fulvic acids; Tytanit-titanium; Vinassa-molasses residue from yeast production; Florovit Eko-composed of many environmentally-friendly products. Control maidens were fertilized with mineral fertilizers containing mainly NPK. The maiden trees fertilized with the preparations Tytanit and Humus UP grew less vigorously and produced smaller increases in the length of lateral shoots than those fertilized with mineral fertilizers. On the other hand, bio preparations such as BF Amin, BF Quality, Micosat and Vinassa promoted tree branching and intensified the growth of lateral shoots, stimulating tree growth to a greater extent than the mineral fertilizers.