Understand and keep in mind the effect of herbicides on post-crop crops
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First, kill the fleas (quinacrine)
According to reports from the United States, no crops can be planted except for rice within 309 days after the fast killing application. Eggplant and tobacco cannot be grown within 12 months. Tomatoes and carrots cannot be grown within 2 years. In addition, Umbelliferae crops such as carrots, celery, parsley, etc. are very sensitive to killing cockroaches, care should be taken not to cause drifting injury, can not be used to irrigate the above-mentioned vegetables by quick killing cockroaches, two, chlorsulfuron-methyl (bean yellow Long, Wei Wei)
It has a long retention period in soil and should not be used to grow beets, rice, potatoes, melons, vegetables, sorghum, and cotton. Cannot be used in soils with pH greater than 7. The soybean active ingredient is 5.6 grams per hectare and can be planted with cereals and alfalfa forage at 3 months after application; soybean huanglonglong corn can be cultivated after 6 months; pods, clover and cotton can be grown after 9 months. Cucumber, corn, peas.
III. Imidazole niacin (Paste)
Pust is a long-lived herbicide. According to U.S. report, wheat, rye, navy beans, pods and peas can be planted four months after application of Pust (perchlorate of 1.4%) at 70 grams of active ingredient per hectare; and barley can be grown after 9 and a half months. Tobacco; 18 months later, corn (including seedlings for maize seedlings), cotton, lettuce, oats, potatoes, safflower, sweet corn, and sorghum can be planted; sugar beets can be grown after 40 months; other crops can be planted after 26 months. Pusit is degraded in acidic soils and degrades rapidly in alkaline soils. Kusaoqing degrades rapidly in alkaline soils and degrades slowly in acidic soils. If beets, canola, and cotton are grown on fields that use Kusaoqing, they must be separated by more than two years.
Four, imazapyr smoke (Gold beans)
Fourth, Sai Ke (Acetochlor, oxathione)
According to reports, the 420-1120 grams of Secor applied every hectare, and four months later it is possible to plant quail, asparagus, barley, corn, grasses, wheat, potatoes, red bean grass, tomatoes, sugarcane, and soybeans; 8 After the month, rice, cotton, and peas can be grown; after 12 months, crops other than roots can be planted; after 18 months, onions, beets and other root crops can be planted. It is recommended that Secor use a dose of 210 - 560 grams per hectare of active ingredient and that this dose is generally safe for later crops. However, in arid regions, soil organic matter content is low, and high-dose sac on alkaline soils with a pH greater than 7.5 may cause phytotoxicity to beetroots.
Sixth, flufenoxan (Wao grass Qing)
It degrades rapidly in alkaline soils and degrades slowly in acidic soils. For example, sugar beet, rapeseed, and cotton must be kept at intervals of two years or more in the field where Koma grass is applied.
VII. Fomesafen (Huwei)
Fosafenutan plots cannot be grown within 1 year after planting sorghum, millet, sunflower and alfalfa, nor should rice, corn, beet, rape, flax, peanuts, peas, beans, tobacco, potatoes, melons and vegetables be grown For high-dose application or consecutive years, replanting within 2 years also requires caution.
Atrazine (Atrazine)
Nine, Nicosulfuron (Yu Nong Le),
X. In addition, there are more than ten types of blends containing the above-mentioned long residual herbicide components, such as bean billion (bean bean mixture), Tonghuan (micotinic acid + iso-f pinewood), soybean (isopropyl chlorate). + Atrazine, Acetazolium (Atrazine + Acetochlor), etc.