First, timely pollination temperature. After the watermelon blossoms, pollen vitality can last for about 3 hours under sunny conditions. It should be in good weather, pollination started around 8 am, as far as possible after 11 pm to finish the powder, when the temperature of the shed exceeds 33 Â

How to quickly extract genomic DNA from feces (no inhibitor, can be directly PCR ) Keywords: fecal DNA extraction    Fecal genome extraction    Genomic DNA extraction Beijing adlai providing a stool extraction Genomic DNA was extracted from the silica gel membrane technology fresh or

The food safety problems caused by “melamine”, “hot pot ingredients”, “flour brighteners” and “dyeing steamed bread” have become the focus of social attention. The “food additives” are not unfamiliar but often overlooked words. Mo

Based on the analysis of the current situation of vegetable seedlings, the number of pests and their future climate, it is expected that the major pests such as Bemisia tabaci and L. sativae will appear moderately mild in the middle of April, downy mildew, gray mold, early blight, and sclerotinia O

(I) Symptoms: The root rot of apples is mainly responsible for the roots of the plants, and they first develop from the roots, form red-brown round spots around the fibrous roots, and then spread to the large roots connected to the fibrous roots. The lesions expand and connect to each other and go

In recent years, apple rot disease has become a devastating disease affecting apple production. Recently, many fruit growers called for advice on how to prevent apple rot disease. According to the analysis of the growth status of fruit trees in the field, most of the current apple rot rots are se

Since the beginning of spring, there have been only a few rains in most parts of the country. In particular, the total rainfall in some southern provinces is less than in previous years. Therefore, the water quality in the pond is not improved, and most of the pond water quality is aging. The pheno

There is no better way to breed egg-laying chickens than to allow the chickens to reach peak egg production on time (150-160). However, in more cases, it is counterproductive. Many chickens produce 70% to 80% of eggs. Temporarily, the rise is slow, there is no peak period, or the peak period is sho

According to recent surveys by regional stations, there are sufficient bacterial sources in the field of Sclerotinia sclerotiorum in our province, and the disease resistance of the varieties is not strong. The rainfall of the rapeseed during weather forecast is high, and it is expected that the occ