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 and potassium fertilizer and urea 20kg should be applied in the first ten days of May, so as to promote growth, expand tree crown and reach yield as soon as possible. After 3 years of age, in addition to applying chemical fertilizer, base fertilizer should be applied in the early and middle of October to ensure soil fertility. For the gardens with high yield and weak tree potential, 5 ‰ urea solution can be used for foliar fertilizer spraying.
3. Weeding in mid-ploughing: although five leaves belong to wild plants, after they are introduced into the field, attention must be paid to weeding in mid-tillage so that they can grow normally, bear fruit early and reach yield as soon as possible. Weeding in the middle tillage can also be combined with irrigation and fertilization, which can be carried out 4 times a year. The first time should be combined with fertilization to loosen soil and preserve soil moisture before germination; the second time should be combined with irrigation in mid-May, the third in late June, and the fourth in mid-July. In short, there can be no grass shortage in the garden, in addition to reducing the consumption of soil nutrients, it can also reduce the occurrence of diseases and insect pests.
4. Diseases: leaf blight began to occur in mid-early July, and can be controlled with 0.01% solution of 5% methyl topiramate, and powdery mildew can be controlled by spraying with 25% trimethoprim 0.125% 0.167% solution. The above two diseases can also be controlled with 200 times Bordeaux solution in mid-June, and the effect is very good.
5. Insect pests: Schisandra chinensis pests are less, and generally do not occur. If sporadic occurrence occurs, manual capture can be carried out. In case of large area occurrence, low-toxic pesticides such as zinc parathion and enemy killing can be used for prevention and control, but one month before harvest, all kinds of pesticides must be stopped to avoid pesticide residues and affect the quality of drugs.
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Growth habit and pruning of Schisandra chinensis
After the artificial cultivation of wild Schisandra chinensis in farmland, in order to control the tree potential, avoid excessive overlap of branches and leaves and twine each other, it should be pruned reasonably according to the growth habits of Schisandra chinensis. Make fruit branches evenly distributed on the shelf surface, ventilated and transparent, improve the field microclimate, enhance disease resistance, reduce nutrient consumption, promote flower bud differentiation and increase yield. 1. Schisandra chinensis sown in the same year can grow to about 20 centimeters, and the high ones can reach more than 30 centimeters. Regardless of the height or size of the seedling, there should be 2 or 4 full buds at the base.
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How to fertilize and water Schisandra chinensis
(1) watering and fertilizing Schisandra chinensis likes fertilizer, so it 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, ammonium nitrate 25-100g/, superphosphate
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