In the spring, Brown Lee moved from dormancy to sprouting and managed well in the spring. It is crucial to ensure that Brown Lee’s flourishing growth, high yield, stable production, high quality and high efficiency are guaranteed. Now we will manage the main technical measures of Brown Lee in spring and give a brief introduction: 1. Qingyuan cultivator: timely cultivating loose soil in the whole garden after soil thawing in early spring, so as to increase the permeability of the soil and increase the soil temperature and soil fertility retention capacity. While doing a good job of cultivating and digging the tree discs, burying the fallen leaves, weeds, and debris under the trees accordingly will serve the purpose of clearing the garden. 2. Top dressing: If you don't do a good job in autumn, you should apply it in time after spring. Promotes sprouting of brown plums, flowering and fruit setting, and shoot growth. At this time, quick-acting nitrogen fertilizer is the main species. In general, 0.5 kg of urea is applied to each sapling. As a result, each tree has 1 kilogram of multiple points for each plant to avoid burning out the root system. 3. Watering before flowering: After a harsh winter environment, Brown plum loses a lot of water (except this winter). Some branches lose water, dry up, and die. In addition, spring sprouts, pumping, flowering and fruit setting require more water and should be filled as soon as possible. It is conducive to the growth of Brown Lee and the increase in the rate of fruit set. In particular, timely watering can reduce the resistance of Brown Lee to late spring and late frost, which has a great effect on postponing the flowering period. 4. Pre-flowering: Insufficient winter shearing is done after Brownie sprouts before flowering. Weak growth, large amount of flowers to be more sparsely cut, more retraction; strong growth potential, to cut less back, pull branches, support branches, open base angle. For standing branches, Wang branches, angles do not open to control its growth potential, regulate the relationship between growth and results. 5. Pay attention to flower and fruit management: Thinning and fruit thinning can significantly increase the fruit setting rate and fruit quality, enhance tree vigor and resistance, reduce the size and reasonable load. It is especially important in brown plum cultivation. The practice over the past few years has proven that many varieties of the Brown Lee series have a higher fruit setting rate than domestic varieties and have a strong ability to resist natural disasters. 6. Pest control: The first is to spray 3 to 5 degrees lime sulfur or 40% methine WP 200 times before mid-February in the middle of February. The overwintering insect pests and plums on plum scale insects, red spiders, locusts, etc. Puncture disease, red spot disease, fluid injection and other diseases have better prevention and treatment. The second is that before and after the flowering period, underground spraying 50% phoxim emulsion 1000 times or 40% methyl isothiophosphate 1000 times, can effectively control the damage of Limousin, beetle, carnivora. The third is to spray 65% ​​of Johnson Zinc WP 500 times or 75% carbendazim 300 times or 70% thiophanate-methyl 800 to 1000 times 2 weeks after flowering. It can effectively control Brown Lee's disease, fluid injection, red spot disease and many other diseases.
Extraction Kit Magnetics Bead Method
This standard specifies the terms and definitions, classification, technical requirements, test methods, identification, labels and instructions for use, packaging, transportation and storage of nucleic acid extraction kits (magnetic beads method) (hereinafter referred to as "kits"). This standard It is suitable for extracting and purifying human genomic nucleic acid and its fragments from various clinical samples such as serum, plasma, whole blood, cerebrospinal fluid, milk, saliva, urine, sputum, swab, tissue or paraffin-embedded tissue by magnetic bead method , Pathogen nucleic acid kit. Pathogen nucleic acid includes deoxyribonucleic acid (DNA), ribonucleic acid (RNA), etc. This standard does not apply to nucleic acid extraction reagents contained in closed systems that cannot extract nucleic acid extraction products for detection.
This kit uses magnetic beads with unique separation function and a unique buffer system to separate and purify high-quality virus from serum, plasma, lymph, cell-free body fluid, cell culture supernatant, urine or various virus preservation solutions DNA/RNA. The uniquely embedded magnetic beads have a strong affinity for nucleic acids under certain conditions, and when the conditions change, the magnetic beads release the adsorbed nucleic acids, which can achieve the purpose of rapid separation and purification of nucleic acids. The whole process is safe and convenient, and the extracted viral DNA/RNA has high yield, high purity, stable and reliable quality, and is especially suitable for automated extraction of high-throughput workstations. The nucleic acid purified by this kit can be applied to various routine operations, including RT-PCR, fluorescence quantitative PCR and other downstream experiments.
Nucleic Acid Lsolation Reagent Kits,Dna Purification Kit,Viral Rna Extraction Kits,Nucleic Acid Extraction Reagents
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