Effect of soil steam sterilization on weed seeds.
Effect of soil steam sterilization on weed seeds.
复制标题
土壤蒸汽灭菌对杂草种子的影响。
DOI：
10.15517/am.v27i2.21286
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发表时间：
2016
期刊：
影响因子：
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通讯作者：
Robin Gómez
中科院分区：
文献类型：
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作者：
María del Pilar Castillo;Robin Gómez
本研究的目的是评价土壤蒸汽灭菌对三种杂草种子活力的影响。该实验于2014年在哥斯达黎加大学法比奥·博德里特·莫雷诺实验站(EEAFBM)进行。对Cartago高地用于培育蔬菜苗圃的土壤中常见的黄花蓬、何首乌和白菜籽的杂草种子进行了评估。将杂草种子放置在装有土壤的桶内两个深度(20和40 cm)，测量两个深度和不同时间段的温度。试验设计为随机区组，每个物种每深度三个重复。当水蒸气出现在土柱顶部时，温度被测量。土壤灭菌持续30分钟，然后在深度和间隔再次测量土壤温度，表明温度为99.3℃。用1%四氮唑盐(1%v/v)测定种子活力。所有回收的种子在土壤灭菌后都是不活的。
The objective of this study was to evaluate the effect of soil steam sterilization on the viability of seeds of three weed species. The experiment was carried out in 2014 at the Fabio Baudrit Moreno Experiment Station (EEAFBM) of the University of Costa Rica. Weed seeds of Poa annua , Polygonum hydropiperoides , and Brassica campestris , common in soils used to prepare vegetable nurseries in the high lands of Cartago, were evaluated. Weed seeds were placed at two depths (20 and 40 cm) inside a barrel with soil; temperature at both depths and in different intervals was determined. The experimental design was random blocks with three replicates per species per depth. Temperature was measured when steam emerged on top of the soil column. Soil sterilization continued for thirty minutes and then soil temperature was measured again at both depths and intervals, indicating 99.3°C. Seeds viability was determined using tetrazolium chloride (1% v/v). All recovered seeds were non-viable after soil sterilization.