How to carry out soil testing and fertilizer in greenhouse
Waveguide Sealdozens of varieties, more than
1,000 kinds of specifications, Changchun Taiyuan Fluorine Gold Mica Co., Ltd.
produces Waveguide Seal manufacturers real materials, welcome site visits. Waveguide
Sealin the
end Well there, samples are provided free of charge. Changchun Taiyuan Mica
Film Production Base is looking forward to your visit. Can Waveguide Seal save money?
Waveguide Seal,Military Radar Wave Sealing Window,Radar Antenna Feeder System Sealing Window,Waveguide Media Sheet Changchun City Taiyuan FluorphlogopiteCo. Ltd. , https://www.micaslice.com
Soil sampling: The shed or flat land adopts diagonal or checkerboard type, and each point is selected from the ground angle of 3 meters to 10 meters and the middle of the ground. Each point is drilled with a shovel for a depth of 20 cm to 30 cm. Take about 0.5 kg of soil from the upper, middle and lower layers, mix the soil samples at each point, and use the "ten"
Take one copy of the letter (about 0.5 kg), put it in a plastic bag and write it on the label to the township, village,
Group, sampler and date, sent to the laboratory for testing. Terrain complex fields, using the "Z" type of point sampling, the method is the same diagonal or checkerboard.
Taking water samples: As far as a region is concerned, due to the complexity of groundwater quality, the water quality in different locations in the same village is very different. Therefore, it should be "one well and one water", each taking 0.5 kg of water,
Put it into the bottle (sampling the bottle with this well water 2 times to 3 times before sampling), write the township, village, group, orientation (or well number), sampler and date on the label, and send it to the test in time. Unit test.
A sample of fertilizer (fertilizer): 0.25 kg of the same type of fertilizer is mixed in the upper, middle and lower layers of each bag, and the sample is reduced to 0.5 kg by the quarter method, and the name of the manufacturer and the name of the product are attached. ,
Mark content, place of purchase, time, sampled township, village, group, name, timely delivery to the laboratory test.
After the soil test, according to the test results, the intention to plant crops, yield indicators, fertilizer nutrient content and other factors, the use of fertilizer demand = [(target yield × crop target yield nutrient absorption rate) - (soil nutrient determination value × 0.15 × Correction factor)] ÷ [fertilizer nutrient content × fertilizer utilization rate of the season] formula, you can calculate the amount of fertilizer required.