Which fertilizers are not suitable for growing fertilizer?
Three kinds of chemical fertilizers should not be used as seed fertilizers containing harmful ions: ammonium chloride and potassium chloride fertilizers, which contain a large number of harmful chloride ions, which produce water-soluble compounds when applied to the soil, which will burn seeds and seedlings; fertilizers such as ammonium nitrate and potassium nitrate contain nitrate ions, which have a serious impact on seed germination, so it is not suitable to be used as seed fertilizer. Fertilizers with toxic effects: urea contains about 2% diuretic, which can be toxic to seeds and seedlings. And urea molecules with high nitrogen content will also infiltrate into the molecular structure of seed protein to denature the protein and cause toxicity to seeds and young roots. Contains volatile and corrosive fertilizers: ammonium bicarbonate, ammonia, etc., with strong volatility, easy to fumigate seeds and seedlings. Common calcium contains more than 5% free sulfuric acid and phosphoric acid, which is harmful to seed germination and seedling growth, and is generally not suitable to be used as seed fertilizer.
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How to apply fertilizer in the aged greenhouse
In production, we often hear many vegetable farmers complain that the fertilizer applied to the shed does not work, and most of them conclude that it is the fertilizer problem. If you think about it carefully, this idea is actually very one-sided. Through the interview with the reporter, we found that the low fertilizer use efficiency is the crux of the problem. Fertilizer use efficiency refers to the absorption of nutrients by crops in the season.
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Operation rules for transportation of bonsai with tree stump
Bonsai is different from ordinary seedlings, its production is often after years of careful maintenance and continuous plastic shaping, modeling, high artistic value, the price is usually not cheap. In particular, the large-scale tree stump bonsai is large in size and weight, so if you want to ensure the quality after arrival, the requirements for shipping work will naturally be higher.
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