How to fertilize and water Schisandra chinensis
(1) watering and fertilization
Schisandra likes to be fat and needs enough water and nutrition during the growing period. After the planting survives, it is necessary to keep the soil moist and irrigate once before freezing to facilitate overwintering. During the blooming and fruiting stage of pregnant buds, it needs not only enough water, but also a lot of nutrients. The fertilizer is applied twice a year, the first time in the leaf expansion period, and the rapidly available nitrogen and potassium fertilizer is applied. For the second time, the available phosphorus and potassium fertilizer was applied after flowering (middle growth stage, early July). With the expansion of the tree, the amount of fertilizer increased year by year, including ammonium nitrate 25-100g/, calcium superphosphate 200-400g/ and potassium sulfate 10-25g/. Combined with deep ploughing in autumn, the rotten farm manure (pig manure) was applied at a rate of 3-5m3 per mu. It was carried out on both sides of the frame every other year, and was close to the planting ditch wall in the first two years. After the third year, a ditch with a depth of 30-40cm was opened between the rows, and the soil was covered immediately after dung filling.
(2) fertilization at seedling stage
Topdressing twice at the seedling stage, the first time, when removing the shading shed, ditching between the seedling rows, applying 200-250g ammonium nitrate and 50-60g potassium sulfate in each seedling bed, and applying diammonium phosphate 300-400g and potassium sulfate 60-80g in each seedling bed when the seedling height was about 10cm. After fertilization, the watering times should be increased appropriately to facilitate the growth of seedlings.
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Management techniques of Schisandra chinensis during its growing period
1. Water management: in the first year after planting, water should be watered many times to ensure soil water content, so as to ensure the survival rate of seedlings and the normal growth of young trees. When the tree enters the fruiting stage, in the normal year, it is necessary to ensure that the water before flowering, post-anthesis water, fruit expansion water and frozen water are watered for 5 times, combined with mid-tillage and weeding. Immediately after watering, loosen the soil and preserve soil moisture to prevent soil consolidation. 2. Fertilization management: the first year of planting should be in the first and middle of June, urea 15-20kg should be applied every 667m2, and phosphorus should be applied in the first ten days of May at 2 years old.
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Difficulties and Countermeasures in artificial cultivation of Schisandra chinensis
Schisandra chinensis (Schisandra chinensis) is an authentic northern medicinal material. Recent studies have proved that Schisandra chinensis can regulate the cardiovascular system, improve blood circulation, stimulate the central nervous system, and has a good effect on the treatment of hepatitis. Schisandra chinensis is also used in wine making, seasoning, extraction of flavors and pigments, food preservatives and so on. At present, with the continuous collection of Schisandra chinensis, wild resources are decreasing, the cost and difficulty of collection are gradually increasing, and the environmental damage caused by the collection of wild resources has attracted great attention. Therefore, artificially cultivated Schisandra chinensis will
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