Our Special Intermediates are mainly a combination of our own actual product structure and product properties, including: 1. The product does not belong to any other product of our company intermediates, 2. Chemical reaction type is more special 3. Can be used to synthesize two or more kinds of API which roles is almost equivalent and difficult to separate the level. 4. This intermediate is somewhat less used for actual production or less practical use. We summarized the above four cases of intermediates temporarily as a special intermediate, if the special intermediate application is enlarge, we will adjust it according to the actual situation to change its "identity."
Special Intermediates Special Intermediates,Tofisopam Intermediates,Amisulpride Intermediates,Antithrombotic/Blood thinners Taizhou Volsen Chemical Co., Ltd. , http://www.volsenchem.com
The main target of wheat pest control
In recent years, due to the changes in the farming system, the pests and diseases in wheat fields have changed significantly. The extent of occurrence has increased and the scope of occurrence has increased. Mainly manifested in the increase in the types of soil-borne diseases, system diseases and disease recovery, the serious harm of underground pests, virus disease has once again become the main disease, grass damage is facing new problems. 1. The occurrence and trend analysis of soil-borne diseases: soil-borne diseases are mainly sheath blight, total rot disease and root rot (has been introduced in the 3154 issue of this edition). Among them, full-blown disease is a major disease that must be strengthened. 2. The incidence and trend analysis of systemic infestation diseases: smut smut, scattered smut, and head smut are serious systemic infection diseases that have risen in recent years. (1) Scattering smut strain earlier than the healthy plant heading, flowering infection, germ-borne bacteria, survey in 2005, widespread occurrence of smut, diseased plant rate of 0.01% to 0.03%, and most disease ear not removed in time , causing re-infection. (2) In 2005, smut smut occurred in local plots, with a high rate of 1% of the diseased plants, smut osmoticum seeds external bacteria, and pathogens that were left in the soil as the main source of infection. The germs invade the shoots from the seed germination and reach the panicles, leaves and culms with the growth of the wheat plants. (3) The head smut is a disease that seriously affects the quality of wheat. The seed is the main infection, and the soil and manure are also carriers. It is a typical seedling infestation disease. At present, a few land plots in our province occur. Since 2004, some high-quality wheat susceptibility has been investigated. In short, systemic infestation is a key disease in the sowing period. 3. The occurrence and trend analysis of the underground pests: Since 2003, the number of underground pests in our province has increased significantly and the damage has increased. The main types of wheat are the three major species of cockroaches, cockroaches, and wireworms. Due to the fact that underground pests have long-lasting survival hazards, there are a large number of insect sources in the field. In this year's survey, the number of beetles was high. In July 5-18, Guantao County caught a total of 6,850 beetles with a black light and attracted more than 400 per night. On the 12th of July, Anxin attracted 2833 copper green beetles with a black light. The number of cockroaches is also very high. Anxin arrived on August 29 and attracted a total of 460 headlamps with black lights, which was 353 heads higher than previous years. Seedling stage of wheat is a serious pest of underground pests, resulting in short ridges. Therefore, strengthening insecticide seed dressing is a must-do when planting seeds. At the seedling stage, effective measures are taken to further kill the underground pests. 4. Virus disease occurrence and trend analysis: Due to the adjustment of sowing date, wheat virus disease, changes in cultivation, and strengthening prevention and control, the degree of decline in recent years has significantly decreased, but the resurgence of viral disease began last year and aggravated. On May 9, 2005, Raoyang County surveyed that the rate of diseased plants was as high as 14.4%. Shijiazhuang had counties and surveyed. The wheat line was 0.5 to 1 meter wide with dwarfed wheat and yellow leaves. According to an investigation by the plant protection agency virus experts, serious disease fields of mixed wheat dwarfs and green dwarfs appeared in Zhaoxian, Quyang and Xinle. This year, the number of insects transmitted by insects was relatively high. In the investigation on June 21 in Guantao County, there were 5 to 16 locusts per square meter. Therefore, the existence of the wheat virus virus this year, under the conditions of conservation tillage, is beneficial to the preservation of the planthoppers and weeds, so it is important to prevent virus diseases during the cultivation of wheat. 5. Occurrence and trend analysis of wheat field weeds: Weeds in broad-fields have broad-leaved weeds, and they are dominated by S. sophia, leeks, and wheat straw. In accordance with past methods of chemical weeding, spring wheat is treated in the jointing stage of returning green. But in recent years, weed populations in the wheat field have undergone great changes. Grasses and weeds have spread in the wheat area, and some of the fields are high, mainly including bromegrass, wild oats, acorns, and festivals. In the survey in 2005, there were dozens of grassy weeds per square meter of plots, several hundred high plants, and serious wheat varieties could not be planted. Gramineous weeds are classified as wild wheat by farmers (in fact, they are grassy weeds such as bromegrass). In the autumn of 2004, these weeds were grown before the winter and they had been distributed 3 to 6 to win the competition with wheat. To compete for water and compete for fertilizers, we must change the method of governance in the future and promote weeding in autumn. (Hebei Provincial Department of Agriculture 050011)