Diltiazem is an aniline, a selective pre-emergence herbicide. It is widely used in soybean, corn, potato, peanut, watermelon, sugar beet and vegetable fields, orchard to control annual monocotyledonous weeds and some dicotyledonous weeds such as crabgrass, goosegrass, foxtail, and valerian. It also has a good control effect on soybean dodder. The dosage form is 48% emulsifiable concentrate. The techniques used are as follows: The advantage of the plastic centrifuge tube is that it is transparent or translucent, its hardness is small, and the gradient can be taken out by the puncture method. The disadvantage is that it is easy to deform, has poor corrosion resistance to organic solvents, and has a short service life.
Plastic Centrifuge Tubes have caps, which are used to prevent sample leakage, especially when used for radioactive or highly corrosive samples. It is very important to prevent sample leakage; the tube cap also has a function to prevent sample volatilization. And support the centrifuge tube to prevent deformation of the centrifuge tube. When choosing this point, you should also pay attention to check whether the tube cover is tight, and whether it can be tightly covered during the test, so as to achieve the inversion without leakage;
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(1) Weeding in soybean fields and vegetable fields: in soybean fields and carrots, leeks, tomatoes, spicy (sweet) peppers, celery, Chinese cabbage, cucumber, kidney beans (bean beans), peas and other vegetables, before sowing or before transplanting, or after sowing Before emergence, use 48-250 ml of 48% emulsifiable concentrate per acre, 30-40 kg of water, spray on the ground, and mix the soil in time after application.
(2) Peanut field weeding: mulch peanut field, before sowing after sowing, 48~200 ml of 48% emulsifiable oil per acre, 40 kg of water, and immediately after the ground spray. In the open field cultivation field, before planting or before sowing, use 200% of 48% emulsifiable concentrate per acre, 40 kg of water, and spray evenly on the ground.
(3) Weeding in paddy fields: 3 to 5 days after rice transplanting, use 48-200 ml of 48% emulsifiable concentrate per acre, mix 20-30 kg of fine soil, and spread evenly in the field.
(4) Weeding in pear orchard: During the growing season of pear trees, before the emergence of weeds, use 48-350 ml of 48% emulsifiable concentrate per acre, 40-50 kg of water, and spray evenly on the ground. The nozzle should be lowered as much as possible and the protective cover should be removed so that the liquid is not splashed on the pear tree to avoid phytotoxicity. (5) Control of soybean dodder: When the soybean is flowering or 3 to 5 strains of soybean per filament, use 48% emulsifiable concentrate 100--200 times liquid stem and leaf spray (about 75-100 ml per square meter of liquid medicine) The control effect is good.