Fertilization at seedling stage (1) Modulation of seedling culture soil. The cultivated soil is the basis for the cultivation of asparagus and strong seedlings. The cultivated soil must be rich in nutrients and good physical and chemical conditions. The cultivated soil can be fertile loam, decomposed ring fertilizer and livestock manure, large dung, and ash. The ratio is: 6 parts of sifted loam, 4 parts of decomposed cattle and horse manure, and 4 parts of ring fertilizer. After mixing evenly, mix 15-20 kg of dried manure or dried chicken manure per cubic meter, 0.5-1 kg of superphosphate. , 5-10 kg of grass ash or 1-1.5 kg of compound fertilizer. Mix well and fill in the impotence or arch shed, 14 cm thick. (2) Preparation of nutrient soil for nutrition and nursery: generally 5 parts of clean garden soil, 2-3 parts of decomposed piled manure, 1 part of river mud, 1 part of plant ash, 2%-3% of superphosphate, fully mixed, and Add water to the level of “hands in a group, landing is scatteredâ€. 2. Fertilization in infancy (1) Fertilization before planting. Asparagus prefers loose and fertile soil environment. Before planting, the soil should be deeply ploughed. Before the ploughing, the organic fertilizer is applied to every 6006.7 square meters of 2000-3000 kg. After tillage, it is fine and flat. In the depth and width of 40 cm of the planting ditch, stratified application of decomposed organic fertilizer 3000-4000 kg, nitrogen, phosphorus, ternary compound fertilizer 40 kg (or ammonium bicarbonate 25 kg, superphosphate 50 kg, chlorine Potassium (15 kg), rotten cake fertilizer 25-50 kg. (2) Fertilization after planting. After 1 month of planting, the young plants have slowed down the seedlings and gave birth to new branches. In order to promote their growth and development, sufficient water and nutrients must be given. At this time, quick-acting fertilizer can be applied, and 8-10 kg or ternary per 667 square meters of urea. Compound fertilizer 10-20 kg. Before the plants enter the autumn hair, they will open trenches to apply livestock and poultry manure or other organic fertilizers of 3000-4000 kg, and 10 kg of phosphorus and potassium fertilizers to promote autumn hair, expand plant assimilation area, and accumulate more assimilates for the next year. The harvest has laid the foundation. 3. Fertilization in adulthood Fertilization of adult asparagus can be carried out 3-4 times a year. Before harvesting in spring, it can be combined with ploughing and ploughing, and 20 kg of compound fertilizer and urea are applied every 667 square meters. It can also be applied to 1000-1500 kg of decomposed and fine organic fertilizer. After the stop mining, the nutrient consumption in the roots is much, and the stems and leaves of the aboveground part are formed. Therefore, about one month after the stoppage, it is the period of most fertilizer demand in the year, accounting for 70% of the annual fertilization amount. In this period, apply 3,000-4,000 kilograms of organic fertilizer per 667 square meters, and mix 20-30 kilograms of compound fertilizer and urea. The amount of fertilizer is small or the quality is not good. It can be mixed with 50-100 kilograms of cake fertilizer. The ditch is applied, and then the soil is buried. After the asparagus is planted, the water is watered once to promote the absorption of fertilizer by asparagus. After more than one month of growth, before and after the beginning of autumn, there will be a peak of pumping, and then enter the autumn for a long period of time. In order to ensure the normal growth during the autumn period, to promote plant production and accumulate more photosynthetic products, before and after the fall, it is possible to apply 1000-2000 kg of organic fertilizer and 20 kg of compound fertilizer in the ditch. If the amount of organic fertilizer is insufficient, the amount of chemical fertilizer can be increased appropriately, but nitrogen, phosphorus and potassium must be combined. It is not necessary to apply only nitrogen fertilizer without phosphorus or potassium, or apply too much nitrogen fertilizer. At the end of autumn and winter, after the asparagus stops growing, it will apply 1000-2000 kg of organic fertilizer per 667 square meters, and 15-20 kg of compound fertilizer, so that the asparagus will be safely wintered and promote early spring. Ditching and topdressing should not be too close to the asparagus, and should not be too far away. Generally, you can leave the bamboo shoots 20-40 cm, so as not to hurt the roots. During the harvesting period, a small amount of fertilizer is applied in stages, which has a significant effect on increasing the amount of bamboo shoots, especially in the 10-15 days before the stop mining, 10-15 kg per 667 square meters of compound fertilizer and urea, which can be stopped. Immediately absorbed by asparagus. The fertilization of asparagus, the local people also explored some successful experiences. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Benzene Ring Mono Substituted CRBN Derivatives
The PROTAC related intermediate derivatives we develop mainly include:
1. Benzene ring mono substituted CRBN derivatives, such as
3-(6-Amino-1-oxo-isoindolin-2-yl)piperidine-2,6-dione Cas 191732-74-8
3-(4-iodo-1-oxoisoindolin-2-yl)piperidine-2,6-dione cas 2207541-30-6
BENZENE RING SUBSTITUTED; MONO-SUBSTITUTED BENZENE RING Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com