Method for evaluating inhibition ability of compost on soil-borne disease
A technology of soil-borne diseases and inhibition ability, which is applied in the field of evaluating the ability of compost to inhibit soil-borne diseases, can solve the problems of not being able to explain the ability of soil-borne diseases inhibition well, and affect the ability of compost to inhibit soil-borne diseases, so as to protect the soil Ecosystem balance, protection of soil health, effects of promoting compost quality improvement
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Embodiment 1
[0028] The evaluation compost is a cow dung compost made of aerobic stacking of cow dung and rice straw. The soil is taken from the farmland where organic fertilizer is applied all the year round and corn is continuously cropped. Under the condition that the soil temperature is relatively stable for 3 days, put the soil into 3 pots of 0.6L potting containers, sow 20 cucumber seeds on the soil surface of each potting container, water once every 60 hours, and observe that no seedlings emerge after 14 days number CK and the number of inverted seedlings CK , to calculate the mean I of the background value of the incidence of soil root rot CK =15.6﹪;
[0029] Collect the soil in the 0-20cm soil layer, add decomposed cow dung compost to the soil, the addition amount is 1% (w / w) of the dry weight of the soil, mix well and put them into multiple 0.6L potting containers respectively, and keep the temperature in the greenhouse Store at 20°C for 20 days;
[0030] From the 0th day (t...
Embodiment 2
[0033] The compost for evaluation is green manure made by aerobic composting of rice stalks, and the soil is paddy soil with chemical fertilizer as base fertilizer and compound fertilizer as top dressing. Under the condition that the soil temperature is relatively stable for 4 days, put the soil into 3 pots of 0.6L potting containers, sow 30 cucumber seeds on the soil surface, water once every 2 days, and observe the number of unemerged seedlings after 14 days CK and the number of inverted seedlings CK , to calculate the mean I of the background value of the incidence of soil root rot CK =22.2﹪;
[0034] Collect the soil in the 0-20cm soil layer, add decomposed green manure to the soil, the addition amount is 1% (w / w) of the dry weight of the soil, mix well, put them into several 0.6L potting containers, and place them in the greenhouse at a constant temperature of 23°C 20 days;
[0035] From the 0th day (the day when the soil is mixed with decomposed compost), take 1 grou...
Embodiment 3
[0038] The evaluation compost is sludge compost composed of sewage sludge and sawdust aerobically piled up. The soil is the soil that has been left fallow for 1 year (the cucumber-pepper-leaf vegetable rotation before the fallow. Under the condition that the soil temperature is relatively stable for 5 days, the soil is packed into Put into 3 pots of 0.6L potting containers, sow 40 cucumber seeds on the soil surface, water once every 2 days, observe the number of unemerged seedlings after 14 days CK and the number of inverted seedlings CK , to calculate the mean value I of the background value of root rot incidence in fallow soil CK 8.9%;
[0039]Collect the soil in the 0-20cm soil layer, add decomposed sludge compost to the soil, the addition amount is 1% (w / w) of the dry weight of the soil, mix well and put them into several 0.6L potting containers respectively, and keep the temperature in the greenhouse at 25 ℃ for 20 days;
[0040] From the 0th day (the day when the soi...
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