Wafer type check valve performance specifications and installation
The wafer type check valve is a universal one-way fluid valve. The utility model has the ad…
Spring and autumn can be planted, but mainly planted in spring. Jujube saplings are mostly grown from the lateral roots of old trees and have fewer fibrous roots. Therefore, jujube transplant is not easy to survive. The jujube planted in spring should not be too early. According to the exp…
There are many reasons for the freezing damage of seedlings. We need to determine the causes of freezing injury of seedlings based on different tree species.
1 Relationship between Frost Resistance and Tree Species and Variety
Its frost resistance is not the same. Such as c…
First, control sugar. The relatively lack of feed in winter and spring, the breeding households often use more concentrate feed rabbits, such as corn, melon, wheat, etc., this approach is unscientific. Concentrate contains many sugars (starch), excessive concentration of sugar in the rabbi…
Release date: 2010-04-26
The hepatitis B sero-epide epidemiological survey conducted by the Ministry of Health showed that the HBsAg carryi…
The production of healthy, high-quality, pollution-free large-scale grass carp is the development direction of grass carp breeding in China. In recent years, the pond in the breeding base of the Coastal Development Zone of Binhai City, Jiangsu Province, has cultivated 230 mu of grass carp.…
The wafer type check valve is a universal one-way fluid valve. The utility model has the ad…
Spring and autumn can be planted, but mainly planted in spring. Jujube saplings are mostly grown from the lateral roots of old trees and have fewer fibrous roots. Therefore, jujube transplant is not easy to survive. The jujube planted in spring should not be too early. According to the exp…
There are many reasons for the freezing damage of seedlings. We need to determine the causes of freezing injury of seedlings based on different tree species.
1 Relationship between Frost Resistance and Tree Species and Variety
Its frost resistance is not the same. Such as c…
First, control sugar. The relatively lack of feed in winter and spring, the breeding households often use more concentrate feed rabbits, such as corn, melon, wheat, etc., this approach is unscientific. Concentrate contains many sugars (starch), excessive concentration of sugar in the rabbi…
Release date: 2010-04-26
The hepatitis B sero-epide epidemiological survey conducted by the Ministry of Health showed that the HBsAg carryi…
The production of healthy, high-quality, pollution-free large-scale grass carp is the development direction of grass carp breeding in China. In recent years, the pond in the breeding base of the Coastal Development Zone of Binhai City, Jiangsu Province, has cultivated 230 mu of grass carp.…