Abstract Through the experimental determination and specific analysis, it is considered that hydride generation-atomic absorption method for the determination of arsenic in soil has the advantages of high accuracy, good precision, fast analysis speed, simple method, e ---MORE---
Due to the large amount of fertilizer in greenhouses, the winter and spring seasons are tightly closed, and the temperature is low and the light is weak. The activity of nitrate reductase in vegetables is low, and nitrates are easily accumulated. How to reduce the accumulation of nitrate in vegeta ---MORE---
To raise money for broiler chickens, one, two, and three must be managed. With good varieties and full-priced feeds, management must be done to improve the quadruple rate, that is, the survival rate of chicks, the breeding rate of broilers, the commodity rate of commercial chickens, and the feed u ---MORE---
At present, many farmers' friends often use several pesticides together when they control crop pests and weeds. If they are used improperly, they will not only not achieve the desired results, but also will easily cause crop damage, increase the cost of drugs, and cause Casualties such as huma ---MORE---
Aphrodisiac stockings are generally conducted from November each year to March of the following year. At this time, the water temperature is relatively low, and the fish species have a weak ability to move without jumping too much. The survival rate is high. The fish species size is 15 to 20 centim ---MORE---
Agricultural mulch refers to a thin agricultural film that is directly covered with a cultivated hoe or near the ground. The general thickness is 0.008 to 0.015 mm and the base resin is polyethylene. In recent years, a variety of colored agricultural films have come onto the market. Due to the diff ---MORE---
Strengthening training wild boars Patiently domesticating wild boars across fake boars can't be intimidated and quiet. Before harvesting, first cut the long hairs before the wild boar wrapper, so as not to seize the long hair and semen contaminated with semen. 1. The boar's sexual maturi ---MORE---