The winter cut of fruit trees is mainly for the purpose of cultivating solid canopy skeletons, constructing reasonable individual and group structures, and coordinating the relationships between growth and results, aging, and renewal of the above ground and underground parts of fruit trees, thereby helping fruit trees to reach premature birth, high yield, stable yield, and high quality. And for ease of management purposes. After the fruit trees enter the dormancy period in winter, the apple tree winter cut should pay attention to four aspects. First, light cut, slow release Light shearing and slow release, slow release in successive years, and single head extension are the basic methods for winter cutting of apple trees. The advantages of this pruning method are that they are conducive to the accumulation of shoot nutrients and are easy to form flower buds, and the fruits are closely attached to the trunk, which is conducive to the formation of high quality fruit. Leave one more year branch and leave one for 20 centimeters. Second, large branches, branches dense If a fruit tree grows well, it is necessary to remove big branches and leave twigs, which is conducive to light and results. As a result, no more than 6 trunks of large trees and 70,000 to 100,000 branchlets per acre are used to achieve large branches and dense branches. The distribution of branchlets is the upper branches dilute, the lower branches dense, the outer branches dilute, the middle branches dense, and the inner litchi less. Third, rush to stand up and protect the advantages The upright branches should be sparser and smaller, and the lichee should be softened to promote flowering and achieve the effect of pressing the fruit with branches. The backbone branches should clear their heads, raise the angle, always maintain the growth advantage, and drop their heads when the crown height reaches 3 meters. Fourth, do not overlap, do not cross Generally, the size branches of fruit trees can not overlap, and the spacing between the large branches on the same side is not less than 50 cm. When they need to stay, they must be pulled to both sides. Branchlets are generally vertical parallel branches, spacing not less than 20 centimeters, to be retracted between the lines of the line between the line, the cross-chain twigs within the line should be removed or lead to where there is space. Sulfamethazine Sulfamethazine Injection,Sulfadimerazine 33% Injection,Sulfadimerazine 33%,Sulfadimerazine 33% Injection Veterinary Shandong Unovet Pharmaceutical Co.,Ltd. , https://www.unovetcn.com
Sulfonamides are broad-spectrum bacteriostatic agents, similar to p-aminobenzoic acid (PABA) in structure. They can compete with PABA to act on difolate synthase in bacteria, so as to prevent the process of synthesizing folic acid required by bacteria as raw material and reduce the amount of tetrahydrofolate with metabolic activity. The latter is the synthesis of purine, thymidine and deoxyribonucleic acid (DNA) by bacteria Therefore, it inhibits the growth and reproduction of bacteria. The effect of sulfonamides can be antagonized by PABA and its derivatives (procaine and tetracaine). In addition, the presence of pus and tissue decomposition products also plays an antagonistic role, because it can provide essential substances for bacterial growth.
Description of use
An antibacterial sulfonamide; Induction of CYP3A4 expression and acetylation by N-acetyltransferase; It shows sex dependent pharmacokinetics and produces metabolic changes through male specific isomer CYP2C11; Inhibit dihydrofolate synthase to hinder folate synthesis. Equivalent to sulfadiazine. It is suitable for the treatment of hemolytic streptococcus, meningococcus, pneumococcus and other infectious diseases with long-lasting effect.
It is used as feed additive to prevent and control the infection of Staphylococcus and hemolytic streptococcus, that is, it is mainly used to treat avian cholera, avian typhoid, chicken coccidiosis, etc.
It is used to prevent the infection of Staphylococcus and soluble Streptococcus, inhibit hemolytic streptococcus and pleurisy coccus, and mainly treat avian cholera, avian typhoid, chicken coccidiosis, etc
It is used as an antibacterial agent to prevent and treat the infection of Staphylococcus and hemolytic streptococcus. It is suitable for the treatment of hemolytic streptococcus, meningococcus, pneumococcus and other infections. It is mainly used to treat avian cholera, avian typhoid fever, chicken coccidiosis, etc.
Sulfamethazine is a traditional antibacterial and anticoccidial drug. It has been widely used in coccidiosis of livestock and poultry in China. The anti coccidia mechanism and peak period of sulfamethazine are the same as Sulfaquinoxaline.
purpose
â‘´ the effect of poultry sulfamethazine on chicken coccidia is the same as that of Sulfaquinoxaline, that is, it is more effective on chicken small intestinal coccidia than cecal coccidia. If you want to control cecal coccidia, you must use high concentration drugs.
Sulfamethazine also does not affect the host's immunity to coccidia. In addition, its antibacterial activity is stronger than Sulfaquinoxaline. Therefore, it is more suitable for coccidia complicated infection.
Coccidia turkeyi can be administered with sodium salt drinking water at a daily dose of 110 ~ 290mg per kilogram of body weight.
(2) for other rabbit coccidiosis, 0.5% medicine can be used for one week, and it can be used for another week after stopping the medicine for one week, or it can be fed for three days according to the daily dose of 109mg / kg body weight. For prevention, o.1% medicine can be used continuously for 2 ~ 4 weeks.
Mink and other coccidiosis can be taken orally at the concentration of 0.5%.
It is effective to treat Eimeria bovis and Eimeria Qiu infection in calves with 5g per 45kg body weight for 5 days.
Lamb coccidiosis can be treated with 0.4% medicine or 0.1% sodium salt for 7 ~ 9 days.
Use attention
(1) long term continuous feeding of sulfamethazine can cause serious toxic reactions. If it is fed at the concentration of 0.5% for 8 days, it will cause hemorrhagic infarction and swelling of spleen in chicks. Continuous feeding at 1% concentration for 3 days can significantly affect weight gain, prolong hemagglutination time and even bleeding lesions due to obstruction of intestinal vitamin K synthesis. Therefore, intermittent dosing method should be used for this product.
(2) laying hens are forbidden.
(3) the rest period is 5 days for broilers, 10 days for turkeys and 11 days for beef cattle.