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How to identify organic fertilizer? A few practical methods to teach you
1 Water soaking method Take a cup, soak an organic fertilizer sample in water, then use your hand to crush the organic fertilizer soaked in the water, stir it a bit and you can intuitively see the raw materials of the organic fertilizer; then let it sit for a while, if the organic fertilizer and water separate within a short time, it means the organic fertilizer has a high specific gravity and contains more soil. 2 Smell method Carefully...
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How to identify the quality of compound fertilizer? Teach you a few practical identification methods
How to identify the quality of compound fertilizer? Please give an introduction to the identification methods. To identify the quality of compound fertilizer, you can refer to the following methods: check the outer packaging. The outer packaging of products from regular manufacturers is relatively standard, printed with the product name, trademark, national standard, production license number, the common NPK ratio of compound fertilizer, total nutrient content, net...
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How to judge soil fertility? A few simple methods to teach you
How do you know whether soil is fertile or poor? Here are some methods to tell whether soil is fertile or poor: First, look at soil color. Fertile soil is darker in color, while poor soil is lighter in color. Second, look at soil depth. Fertile soil is generally more than 60 cm deep, while poor soil is relatively shallower. Third, look at soil workability. Fertile soil is loose...
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How is fertilizer used to kill pests? A few practical methods to teach you
How is fertilizer used to kill pests? Please explain the methods. Using fertilizer to kill pests can refer to the following methods: Phosphate fertilizer for pest control. Cotton bollworm fears phosphorus most during the egg stage, and immediately escapes as soon as it encounters phosphorus. Based on this characteristic, a 2% superphosphate extract can be used for foliar spraying on cotton, leaving 1 row unsprayed every 5 rows, to drive the cotton boll...
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