Lu Renqiang, Researcher, Institute of Forestry and Fruit Research, Beijing Academy of Agriculture and Forestry Sciences
A: There are many new shoots in the peach tree and the growth is large. In order to control the growth of the new shoots, promote the fruit enlargement and the ventilation and light transmission of the trees, it is often necessary to carry out several summer shears. In order to reduce the occurrence of long branches, we should start from two aspects:
â– Reduce the amount of nitrogen fertilizer applied and the amount of irrigation, and do not dry or not.
â– Long-cut pruning is carried out during winter shearing, with the main focus of thinning and slowing down, reducing the amount of winter pruning. These measures will ease the tree, disperse the growth forces, produce less branches and grow less, thus reducing the amount of summer pruning.
The main differences between powder,premixed agent, granule are as follows:
Veterinary Soluble Powder: means a dry powder preparation made of one or more drugs by grinding and evenly mixing, with or without dressing.
Premix: refers to one or more drugs, and a suitable substrate evenly mixed to make a powder or granular preparation.
As a dosage form of feed drug additive, it is specially used for mixed feeding.
Powder powder, that is, powder, and premixed agent, the main differences of granules are as follows:
1.the production method is different
1.powder: medicine or with appropriate auxiliary materials by grinding, evenly mixed dry powder preparation.
2.Veterianary premix: powder or granular preparation made by evenly mixing the drug with an appropriate substrate.
3.granules: raw materials and appropriate excipients mixed into a certain particle size of dry granular preparation.
2.different characteristics
1. Dispersing agent: compared with other solid dosage forms, dispersing agent is easy to disperse, dissolves quickly, absorbs quickly and takes effect quickly; The preparation process is simple, the dosage is easy to control, and it is easy for infants to take.
2.Premix for animal: Premix used in the matrix including carrier, diluent, etc. The substrate should be stable, with good fluidity, and easy to mix with drugs and feed.
3. Granule: the dispersion, adhesion, agglomeration and hygroscopicity of granule are lower than that of granule; The separation of various components in granule is avoided because of the adhesive used to make granule after mixing. Convenient storage and transportation; Particles can change their function by coating.
Veterinary drug premix,Premix for animal,Veterinary premix,Poultry premix feed
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