西澳大利亚州小麦作物中8种杂草的生长，存活，种子生产和脱落的比较,Weed Research

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西澳大利亚州小麦作物中8种杂草的生长，存活，种子生产和脱落的比较
Weed Research ( IF 2.2 ) Pub Date : 2020-09-17 , DOI: 10.1111/wre.12444
Catherine P. D. Borger ₁ , Abul Hashem ₁ , Gurjeet S. Gill ₂

Affiliation

综合杂草处理策略的开发取决于对单个物种的人口统计学的透彻了解。目前的研究在西澳大利亚州Wongan Hills的冬季年度小麦种植系统中建立了8种冬季或夏季杂草物种，并调查了每种物种的第一个队列的出现，存活率，植物大小，种子产量和种子脱落三年（2016年） €“ 2019）。冬季杂草Bromus diandrus和刚性黑麦草与小麦作物同时出现，并且最初一批明显的植物每年都有100％的成活率。相比之下，其他冬季杂草物种，如大麦芽孢杆菌（Hordeum leporinum），大黄酸模（Rumex hypogaeus），油菜（Sonchus oleraceus）和何首乌经常出现晚于作物，并且存活到种子生产中的植物百分比较低。然而，与其他物种相比，单个的欧洲油菜和小叶葡萄球菌的种子产量最高。除僵硬的乳杆菌外，所有冬季杂草的种子脱落模式都不同。夏季杂草物种同时出现，但每种物种的最初队列中的植物并非总是生存以产生种子。B. diandrus的早期出现和高存活率表明其具有很高的竞争能力，但脱落的发生时间与僵硬乳酸杆菌相似。收获杂草种子控制可能是该物种的可行控制方法。

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Comparison of growth, survivorship, seed production and shedding of eight weed species in a wheat crop in Western Australia

Development of integrated weed management strategies is dependent on a thorough knowledge of the demography of individual species. The current research established eight winter or summer weed species in a winter annual wheat cropping system at Wongan Hills, Western Australia, and investigated emergence of the first cohort of each species, survivorship, plant size, seed production and seed shedding over three years (2016â€“2019). The winter weeds Bromus diandrus and Lolium rigidum emerged at the same time as the wheat crop, and the initial cohort of marked plants had 100% survival to seed production in each year. By comparison, other winter weed species like Hordeum leporinum, Rumex hypogaeus, Sonchus oleraceus and Polygonum aviculare frequently emerged later than the crop and had a lower percentage of plants surviving to seed production. However, individual S. oleraceus and P. aviculare plants had the greatest seed production compared to other species. All winter weeds had variable patterns of seed shedding between years, with the exception of L. rigidum. Summer weed species emerged at the same time, but plants in the initial cohort of each species did not always survive to produce seed. The early emergence and high survivorship of B. diandrus indicates high competitive ability, but shedding commenced at a similar time to L. rigidum and harvest weed seed control may be a viable control method for this species.

更新日期：2020-11-16

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