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Carrots have higher requirements on soil. It is better to choose sandy loam or loam with deep and fertile soil, loose soil and convenient irrigation and drainage. The soil is ideal for neutral or slightly acidic, and the former is a non-umbrella-type vegetable and vegetable plot. Green onions, Chinese cabbage, food crops, etc. The cultivation method is generally ridge cultivation. Under medium fertility conditions, when the output index per mu is 2000 to 4000 kg, combined with the soil preparation, the application of high-quality organic fertilizer 4000 kg, superphosphate 50 kg, potassium sulfate 10 kg, deep plowing 25 to 30 cm, 耙 flat work.
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Fluorescence filter is generally composed of excitation filter, emission filter and bidirectional spectroscope. It is a key component used in biomedical and life science instruments. Its main function is to separate and select the characteristic band spectra of excitation light and emission fluorescence of substances in the biomedical fluorescence inspection and analysis system.
Fluorescence Filter,Fluorescent Light Filter,Fluorescent Light Filter Glasses,Filters For Fluorescence Microscopy
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