Vegetable micro-fertilizer dosage

In vegetable production, excessive use of micro-fertilizer can cause toxicity to vegetable production, and lack of micro-fertilizer affects quality and yield. The dosages of several major micro-fertilizers are described below. 1. Zinc sulphate: Generally, the dosage per acre is 1.5~2.5 kg, the soaking concentration is 0.02~0.05%, and the foliar spraying concentration is 0.1%~0.5%. 2. Copper sulfate: The general application rate per acre is 1.5~2 kg, the soaking concentration is 0.02~0.05%, and the foliar spraying concentration is 0.2~0.5%. 3. Manganese sulfate: The general application rate is 1~1.25 kg, the soaking concentration is 0.05%~0.1%, and the foliar application concentration is 0.05%~0.15%. 4, ferrous sulfate: the amount of 1 ~ 3.5 kg per acre (according to the soil acidity appropriate increase or decrease). Foliar application concentration is 0.2~1%. 5. Zinc molybdate: The application rate per acre is 30g~200g, the soaking concentration is 0.05%~0.1%, and the concentration of foliar application is 0.02%~0.05%.

Other Steel Structures

Steel Structures can be used in many industries such as foundation reinforce, electric power transmission structures and tubular scaffolding, etc.

A flange can also be a plate or ring to form a rim at the end of a pipe when fastened to the pipe. A blind flange is a plate for covering or closing the end of a pipe. A flange joint is a connection of pipes, where the connecting pieces have flanges by which the parts are bolted together.

Although the word flange generally refers to the actual raised rim or lip of a fitting, many flanged plumbing fittings are themselves known as 'flanges':

There are many different flange standards to be found worldwide. To allow easy functionality and interchangeability, these are designed to have standardised dimensions. Common world standards include ASA/ASME (USA), PN/DIN (European), BS10 (British/Australian), and JIS/KS (Japanese/Korean). In the USA, ANSI stopped publishing B16.5 in 1996, and the standard is ASME B16.5

Steel Structures Carport,Substation Steel Structure Fabrication,Peb Steel Structure,Light Steel Structure

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