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Answer: For the prevention and cure of pear scab, we should grasp three critical periods a…
I. Vaccine to prevent reproductive disorders in pigs
Porcine reproductive disorder…
The 2017 conference is the harve…
Angelica is a common blood and blood circulation medicine. Do you know which people are su…
Citrus mainly applied nitrogen and phosphate fertilizers during spring shoots, combined wi…
In the spring, everything recovers, and the yang rises. Th…
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Due to the rapid growth of roots and large numbers of hairy roots in autumn, the autumn ro…