Grape spray fertilizer tips
Spraying foliar fertilizers on grapes, leaves with a wide range of fertilizers, rapid fertilizer efficiency, and labor-saving fertilizers are common fertilization methods for grapes. To achieve the best results for foliar spray, you should…
First, pond fish how to achieve stable production and high yield
1, fish pond. The quality of the fish pond itself is a key to stable production and high yield of pond fish. High-yielding fish ponds require water depth, water width, …
Release date: 2009-04-09
Recently, on the basis of the success of clinical trials of superficial tumor treatment, China has made new progre…
The function of the safety valve is to prevent the pressure of the medium in the pipeline or the device from exceeding the specified value, so as to achieve the purpose of safety protection.
The safety valve is a safety protection val…
Gluten and Liangpi is a beautiful food on the market. It has a good taste, cool and refreshing, convenient consumption, economic benefits, and other characteristics has won people's favor, has great market potential. High yield, simple operation, 1 person can. A…
Release date: 2009-04-15
Recently, the successful university in Taiwan announced the completion of the world's first mobile…
Look at the soil
Most of the necessary nutrients for crops come from the soil. That is, the nutrient status of crops has a direct relationship with the status of soil nutrients. Therefore, diagnosis of nutrient status of crops must take into account the diagnosis of soil nutrient s…
The gate valve is a widely used valve. It i…
A butterfly valve is a valve that uses a circular disc as a starting and closing member and rotates with the valve stem to open, close and adjust the fluid passage. The butterfly valve's disc is mounted in the diameter direction of the…