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为降低有机肥料使用过程中痕量除草剂对农业安全生产的风险,采用市售基质、普通堆肥和受除草剂污染的堆肥为试材,设置4个处理(无污染堆肥、二氯吡啶酸污染堆肥、氟乐灵污染堆肥和环丙嘧啶酸污染堆肥),在0、5%、10%和20%不同堆肥用量条件下,以番茄的出苗率和播种后45d时植株的株高、叶片面积、茎粗、植株干质量、根长和壮苗指数为评价指标判断除草剂污染堆肥对番茄种子萌发及植株生长的影响。结果表明,除草剂污染堆肥对番茄种子的萌发及生长都有一定的抑制作用,随污染堆肥用量的增加抑制作用增加,且对作物产物抑制作用的污染堆肥用量及抑制作用大小因除草剂种类而异,二氯吡啶酸污染堆肥对番茄生长的影响最大。植物生长指标茎粗、植物干质量和根长较株高和叶面积而言,对除草剂污染更敏感。
In order to reduce the risks of trace herbicides to agricultural safety during the use of organic fertilizers, four treatments (non-polluting compost and clopyralid) were set up using commercially available substrates, common compost and compost contaminated with herbicide as test materials Composting, triflumurium compost and cyproteric acid-contaminated compost) under the condition of 0, 5%, 10% and 20% compost, the emergence rate of tomato and plant height, leaf area , Stem diameter, plant dry weight, root length and seedling index were used as evaluation indexes to judge the effect of herbicide-contaminated compost on tomato seed germination and plant growth. The results showed that the herbicide-contaminated compost had some inhibitory effects on the germination and growth of tomato seeds, increased the inhibitory effect with the increase of the amount of contaminated compost, and the amount of the compost and the inhibitory effect on the crop product inhibited by the herbicide species Difference, clopyralid contamination of compost on tomato growth the greatest impact. Plant growth indicators stem diameter, plant dry weight and root length compared to plant height and leaf area, the herbicide contamination is more sensitive.