■燕麦是一种两用谷物,用于谷物和饲料。随着人们对燕麦营养的了解,人们对燕麦的需求一直在增加,生态,燕麦的经济价值增加。然而,生长期的频繁倒伏严重影响了燕麦的高产潜力以及谷物和饲料的质量。
■因此,我们以抗倒伏品种LENA和倒伏敏感品种QY2为材料,实施四种不同的种植密度:2.25×106株/公顷(D1),4.5×106株/公顷(D2),6.75×106株植物/公顷(D3),和9×106株植物/公顷(D4)。在适当的生长和发展阶段,我们评估了农艺性状,机械特性,生化成分,产量及其组成部分。研究了种植密度对生长的影响,住宿,和燕麦的产量,以及它们的相互关系。此外,我们确定了最佳种植密度,以建立稳健的作物结构。本研究旨在为燕麦的高产优质栽培做出贡献。
■我们观察到,随着种植密度的增加,植物高度,两种品种的草和谷物产量均先增加后减少;根鲜重,阀杆直径,茎壁厚度,茎穿刺强度,断裂强度,抗压强度,木质素和粗纤维含量,产量成分下降;而倒伏率和倒伏系数增加。种植密度通过调节株高影响倒伏,重心的高度,茎壁厚度,节间长度,和燕麦的根鲜重。此外,它可以通过调节木质素和粗纤维的合成来影响茎的机械强度,进而影响抗倒伏性。植物高度,重心的高度,茎壁厚度,节间长度,根鲜重,断裂强度,抗压强度,木质素和粗纤维含量,单株植物重量,籽粒产量和1000粒重可作为评价燕麦茎抗倒伏性的重要指标。我们还注意到种植密度直接和间接影响谷物产量(通过影响倒伏);高密度增加了倒伏率,降低了谷物产量,主要是减少1000粒的重量。尽管如此,倒伏与草产量之间没有显着关系。适当的种植密度可以在增加产量的同时保持良好的抗倒伏性。在这项研究中,就抗倒伏性和草和谷物产量而言,发现4.5×106株/公顷(D2)是燕麦的最佳种植密度。这些发现可为燕麦种植提供参考。
UNASSIGNED: Oat is a dual-purpose cereal used for grain and forage. The demand of
oat has been increasing as the understanding of the nutritional, ecological, and economic values of
oat increased. However, the frequent lodging during the growing period severely affect the high yielding potential and the quality of the grain and forage of oat.
UNASSIGNED: Therefore, we used the lodging-resistant variety LENA and the lodging-sensitive variety QY2 as materials, implementing four different planting densities: 2.25×106 plants/ha (D1), 4.5×106 plants/ha (D2), 6.75×106 plants/ha (D3), and 9×106 plants/ha (D4). At the appropriate growth and development stages, we assessed agronomic traits, mechanical characteristics, biochemical compositions, yield and its components. The study investigated the impact of planting density on the growth, lodging, and yield of oat, as well as their interrelationships. Additionally, we identified the optimal planting density to establish a robust crop structure. The research aims to contribute to the high-yield and high-quality cultivation of
oat.
UNASSIGNED: We observed that with increasing planting density, plant height, grass and grain yields of both varieties first increased and then decreased; root fresh weight, stem diameter, stem wall thickness, stem puncture strength, breaking strength, compressive strength, lignin and crude fiber contents, and yield components decreased; whereas the lodging rate and lodging coefficient increased. Planting density affects lodging by regulating plant height, height of center of gravity, stem wall thickness, internode length, and root fresh weight of oat. Additionally, it can impact stem mechanical strength by modulating the synthesis of lignin and crude fiber, which in turn affecting lodging resistance. Plant height, height of center of gravity, stem wall thickness, internode length, root fresh weight, breaking strength, compressive strength, lignin and crude fiber content, single-plant weight, grain yield and 1,000-grain weight can serve as important indicators for evaluating oat stem lodging resistance. We also noted that planting density affected grain yield both directly and indirectly (by affecting lodging); high density increased lodging rate and decreased grain yield, mainly by reducing 1,000-grain weight. Nonetheless, there was no significant relationship between lodging and grass yield. As appropriate planting density can increase the yield while maintaining good lodging resistance, in this study, 4.5×106 plants/ha (D2) was found to be the best planting density for oat in terms of lodging resistance and grass and grain yield. These findings can be used as a reference for
oat planting.