I. Scientific selection of improved varieties
The high temperature and rain or dro…
Breeding ducks with excellent varieties and excellent quality have high genetic potential for …
Why does the starter have a broad spectrum?
1. The selection of Macrobrachium rosenbergii in ponds requires high dissolved oxygen. Therefo…
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The "barrel" fermentation bed hazard The immune response is a biological process that is affected by many factors. In the vacci… First, sowing. In early March, sowing, electric greenhouse nursery for greenhouses, double…
First, the symptoms of cucumber blight Wilt disease belongs to the soil-borne diseases, mainly…
The frequency of water changes in ponds is large, and a large amount of wastewater must be…
1, Qinggou drainage, mechanized open car ditch. Demands rice to be drained and dried in time. …
Auditing No.: National Auditing Cotton 2005011 This breed is a new breed of conven… |