The key to doing a good job in the field of chemical weed control in wheat fields is to clarify the types of weeds and their occurrence patterns, grasp the appropriate period of drug use, and do the right medicine. The regularity and chemical control of weeds in wheat fields are described below:
The first peak of weeds in wheat fields occurred in the same period as the sowing of wheat. In the middle and early October of the autumn, the weeds that weeds occurred were Maijiagong, SVW, Chinese leeks, Pork crickets, Frogs, and large nests. Vegetables, lacquer, and geese do not eat grass. All of them are weeds. The majority of these weeds are safe for winter, except for a small number of natural deaths in the winter. They bloom well from April to May of the following year. The second peak is synchronized with the return of green wheat, which is the end of spring from the end of February to the beginning of May. In addition to the above-mentioned several weeds can continue to occur, there are gray gray dishes, purslane, Xanthium and other occurrences. These weeds bloom, mature and mature before the harvest. In general years, weeds occur mainly in autumn, and weeds account for about 80% of total weeds in autumn. They have a high density of occurrence, a long symbiotic period with wheat, a serious hazard, and a large impact on wheat.
Chemical control of weeds in wheat fields should be based on the principle of early treatment and prevention. During the prevention and control period, the prevention and control of autumn wheat in the tillering period should be the main focus, and the prevention and treatment of spring wheat in the returning green period should be supplemented. During the autumn wheat tillage stage, most of the weeds in the field have emerged. At this stage, weeds are small, the root system is weak, and the drug resistance is poor. The ideal weeding effect can be achieved by applying a smaller dose, and the wheat seedlings have strong resistance to wheat and are safe to wheat. . In the spring, since the weeds have grown, the root system is developed and the drug resistance is enhanced. At the same time, the wheat seedling grows, and a large amount of liquid medicine is intercepted by the wheat leaves. Only a small part of the liquid is sprayed on the weeds, which is not conducive to improving the weeding effect. .
Chemical control technology for weeds in wheat fields: wheat fields dominated by broad-leaved weeds such as sow wormwood, leeks, lacquer, wheat, and spikelets, can be covered with a cover (75% tribenuron-methyl) per mu. (1.8g/bag) or wheat straw (10% tribenuron) per bag (10g/bag) or wide bag (75% thifensulfuron) per bag (3g/bag), A little water was mixed with mother liquor, and then 30-45 kg of water was sprayed on the weeds at the 3-4 leaf stage. When spraying, note that the temperature should be higher than 5°C. Select a sunny day when the wind is evenly sprayed. The temperature is lower than 5°C and the effect is not good.
In the spring, Mayford (10% tribenuron-methyl) can be used as a bag (15 g/bag) per mu. When the temperature in early spring is higher than 10°C, select a sunny day and evenly spray.
Music therapy device by means of "interactive body, sense of music", through physical interaction between children's music transmission activity, meet in the process of development of the special children's physical, psychological, cognitive and social development needs, under the induction of music will mood to automatic vent, and induce the subconscious of children, make its produce association and imagination, in stimulating feeling at the same time.
Relax Massage Chair,Music Glove Hand Therapy,Real Relax Massage Chair,Music Therapy Device
jinan Fangqi Sunshine education consulting CO.,LTD. , https://www.fzrehabmarket.com