Method for enhancing soil fumigant disinfection effect
A fumigant and soil technology, applied in the field of soil fumigation
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Embodiment 1
[0015] The experiment is divided into an experimental group and a control group. The medicament used in the experimental group is a mixed medicament. The preparation method is to add No. 3 aviation kerosene (Jetfuel No.3) accounting for 1% of the mass of chloropicrin to the chloropicrine, and mix well , have to mix medicine. The drug used in the control group was trichloropicrin without adding aviation kerosene.
[0016] Determination of the distribution of the agents used in the experimental group and the control group in the soil: Specifically, the soil column system was used to measure the emission of chloropicrin. The steps are as follows: the PVC pipe is used as the main body of the soil column, and the emission flow box is placed on the top, and the bottom is the leaching collection. device. The PVC pipe is 72cm high and has an inner diameter of 15cm. Set up 9 sampling points at 5cm, 10cm, 15cm, 20cm, 25cm, 30cm, 40cm, 50cm, and 60cm below the soil surface. With a stai...
Embodiment 2
[0019] Materials: chloropicrin, No. 3 aviation kerosene (Jetfuel No.3), plastic film
[0020] Experiment site: Strawberry planting solar greenhouse in Changping District, Beijing
[0021] The experiment is divided into untreated group, experimental group and control group. The untreated group does not carry out any treatment to the soil. The medicament used in the experimental group is a mixed medicament. The preparation method is to add chloropicrin solution to the chloropicrin solution. No. 3 aviation kerosene with a mass of 1% was mixed evenly to obtain a mixed medicament. The medicament used in the control group was chloropicrin liquid without adding aviation kerosene.
[0022] Use a soil disinfection syringe to inject the medicament evenly into the soil, and the dosage of the medicament used in the control group is 35g / m 2 (group A), the dosage of the medicament used in the experimental group is 80% of that of the matched group (group B, 28g / m 2 ) and 70% (Group C, 24.5...
Embodiment 3
[0028] Materials: chloropicrin, 1,3-dichloropropene, No. 3 aviation kerosene (Jetfuel No.3), plastic film
[0029] Experiment location: Sunlight greenhouse for cucumber planting in Changping District, Beijing
[0030] The stock solution in this experiment is a mixture of chloropicrin and 1,3-dichloropropene at a mass ratio of 7:3. The medicament used in the experimental group is a mixed medicament. The preparation method is to add No. 3 Aviation Kerosene, the drug used in the control group was the stock solution, without adding aviation kerosene. The untreated group did not apply any treatment to the soil.
[0031] Use small-scale soil disinfection equipment to evenly apply the agent to the soil, and the application amount of the original solution in the control group is 45g / m 2 (group A), the administration dose of the mixed medicament of the experimental group is respectively 80% of the matched group (group B, 36g / m 2 ) and 70% (Group C, 31.5g / m 2 ), then the control gro...
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