Bromegrass is a vicious weed in the grasslands. In 2007, it was harmed in the wheat fields of the city, and it spread rapidly in some areas. The area of ​​occurrence was more than 50,000 mu. This caused a significant reduction in wheat production, and serious grassland shortages or crop failure. It even led some farmers to dare not plant wheat. In the past two years, after a large area of ​​control, the damage of wheat to wheat has been well controlled and the area of ​​occurrence has gradually narrowed, but there are still some high density wheat fields. When wheat returns to green, it is the peak period of weed emergence, especially for wheat fields that have not been able to apply pesticides in time before winter, or wheat fields where weeding is still a serious hazard. We should seize this period to prevent and control bromegrass. Delivery and growth reduce the damage of Brome to wheat. Beijing Plant Protection Station carried out research on the control technology of Brome in 2010-2011, and summarized and promoted the control technology of wheat in wheat fields. The specific measures are as follows: First, the biological characteristics of Brome There are three kinds of bromegrass in the city's wheat fields, which are the weeds of the next year. Autumn wheat emerged 5-7 days after sowing and matured slightly earlier than wheat, and the whole plant was covered with hairs. Bromegrass is a highly productive, widely adaptable plant that can grow in weakly acidic to weakly alkaline soils. Bromegrass is propagated by seeds. The seeds have obvious dormancy characteristics in summer and the number of seeds per plant is large. They can spread with wheat seeds and harvesters over long distances. Bromegrass is highly resistant to herbicides. At present, most herbicides are ineffective in production and control. Second, control technology Agricultural control 1. Select seeds. The wheat seeds were selected and the mixed grass seed was sowed. 2. Clean the harvester. Harvesters that have crossed the region or harvested with brome should remove the residue from the machine before proceeding. 3. Manually remove. For barley with low density wheat, it can be removed during the whole wheat growing period. 4. Before the broadcast, turn it deep. Buffalo grains are small and have weak excavated ability. When the soil layer is more than 10 centimeters, the seedlings can hardly emerge. The deep plowing before sowing can greatly reduce the occurrence of bromegrass. Drug control In the spring, apply 1-2 tablets of new leaves. Fall is applied at the 2-3 leaf stage. The currently used herbicide for bird baker is a 70% tiger water dispersible granule. This medicine is safe for wheat and has a long safe application period. However, when the grass age is large, the control effect of the strain will decrease. Amount of 3-4 grams per acre, watered 30-40 kg spray. When weeding with tigers and tigers, we should first completely dissolve the drug and then formulate it into liquid spray to ensure the amount and effect of the drug. Bedroom Ceiling Lamp,Round Ceiling Lamp,Ceiling Lamp Steel Ring,Aluminum Ring Ceiling Lamp Hangzhou Lingjun Technology Co.,Ltd , https://www.lingjunelectrical.com