Chronic drug damage of Schisandra chinensis
The symptoms of chronic drug injury are not obvious, which can be judged by the comparison of normal plants, which ultimately affects the yield and quality. Mostly caused by pesticide residues, mainly caused by repeated or successive years of pesticide application, the accumulation of pesticide residues in the soil or plants.
Before Schisandra chinensis seedlings or cultivation, if the previous crops have used herbicides, Wotuan can be used to degrade pesticide residues in the soil.
(1) usage and dosage
① uses Wotuan to treat the soil during the leisure period of farmland. The specific method is to add 2000 times of water to 750g per mu, stir it evenly and fully dissolve it, spray the ground evenly with a sprinkler or spray pot, and then plough for leisure, so that pesticide residues can be fully degraded.
A few days before sowing or planting, ② was fully dissolved with 750g of Wotuan and 2000 times of water per mu, sprayed on the surface of the seedling bed or planting belt, and then sowed or transplanted.
(2) points for attention
① should be used at one time after preparation and should not be mixed with acid pesticides and should not be foliar sprayed.
② fertile soil is non-toxic and has no residue, so it needs to be sealed and protected from light, and it is effective for a long time.
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Artificial cultivation of Schisandra chinensis
Schisandra chinensis is a perennial deciduous woody vine of Magnoliaceae, mainly produced in Jilin, Liaoning and Heilongjiang provinces. The quality of Schisandra chinensis produced in Jilin and Liaoning is the best, which is known as "Liao five flavors". Used in medicine with ripe fruit. Schisandra chinensis is a kind of multi-functional and multi-purpose economic plant for both medicine and food, which has the effects of tonifying qi, nourishing kidney, collecting lungs, promoting fluid, improving intelligence and calming the mind. In recent years, the supply of Schisandra chinensis falls short of demand, and the price has been rising all the way, but there is still no stock. Schisandra chinensis was mainly collected in the wild in the 1970s and 1980s, and in the 20th century
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The phenomenon of falling flowers and fruits of Schisandra chinensis
1. Falling flowers caused by herbicide damage. ⑴ symptoms: new functional leaves curled in spring, serious leaves were black, withered and fell off, herbicide drift occurred in flowering, petals wilted, petals fell off early, pollen vigor decreased or died, pollination was difficult, and flowers did not bear fruit; ⑵ causes: 2mae4 color D butyl drug damage; ⑶ preventive measures: ① recommended using 2mae4murD isooctyl ester instead of 2mae4ray D butyl ester. ② found that the symptoms could be sprayed with 500x yellow humic acid foliar fertilizer. II. Introduction of low temperature and freezing injury
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