硝磺隆对杂草向日葵生物生产的影响

D. Božić, M. Sarić-Krsmanović, S. Vrbničanin
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引用次数: 0

摘要

通过田间试验,定量研究了硝磺隆对杂草向日葵生物生产的影响。种植面积为5 × 4.2 m,行距24 cm,行距70 cm。有两对发育叶片的植株分别用nico磺隆处理,用量分别为:0、10、20、40、60和80 g a.i. ha-1。在种植期间记录5次营养参数(株高、鲜重和叶面积),包括施用除草剂前的第一次测量和每隔约两周的4次测量。在种子成熟后测定籽粒和种子产量(单株穗数、穗重、穗直径、单株种子重、单株种子重、单株种子数)。与对照相比,施用尼科磺隆对杂草向日葵的生长有抑制作用。该除草剂的所有施用量都降低了植株的营养参数(株高、鲜重、叶面积)和一些生殖参数(单株穗数、单株种子重、单株种子数),这些参数随着尼科磺隆施用量的增加而降低。对其他生殖试验参数(穗重、穗直径、每穗种子重)的影响与对其他参数的影响不同。
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Effects of nicosulfuron on biological production of weedy sunflower (Helianthus annuus)
Field experiments were conducted to quantify the effects of nicosulfuron on biological production of weedy sunflower (Helianthus annuus). Plants of this weed species were sown in plots sized 5x4.2 m with inter-row spacing of 24 cm, and 70 cm distance between rows. Plants with two pairs of developed leaves were treated with nicosulfuron using the next rates: 0, 10, 20, 40, 60 and 80 g a.i. ha-1. Vegetative parameters (plant height, fresh weight and leaf area) were recorded five times during vegetation, including the first measurement just before herbicide application and four measurements at intervals of about two weeks. Head and seed production (number of heads per plant, head weight, head diameter, weight of seeds per head, weight of seeds per plant, number of seeds per plant) were determined after seed maturity. The application of nicosulfuron caused growth reduction of weedy sunflower in comparison with the control. All application rates of this herbicide reduced vegetative (height, fresh weight, leaf area) and some generative (number of heads per plant, weight of seeds per plant, number of seeds per plant) parameters, which decreased with increasing rates of nicosulfuron. Effects on the remaining generative test parameters (head weight, head diameter, weight of seeds per head) were not analogous to the effects on other parameters.
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