Under the principle of balanced fertilization, maize is the peak period of nutrient absorption after jointing until the big bell-mouth period. Generally, the first time before and after jointing, maize can be topdressed for the first time. Per acre topdressing 10 kg of urea; 7-10 days before tasseling, top dressing should be applied for the second time, each mu can be applied to 20 kg of urea. If the base fertilizer and seed fertilizer are more abundant and the soil is very fertile, you can focus on topdressing once, and combine the second time with deep soil fertilization.
The Fiberglass Beams we produce are made of high quality fiberglass and the main function of the fiberglass beams is to support the floor of a pig cage. It is made of special material with heat resistance, corrosion resistance and high strength. We produce fiberglass beams mainly "T" shape and "hollow" two. The fiberglass beams we produce are durable and inexpensive. If your order is large, we can produce according to your requirements and drawings.
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HuangHua FengYi Honde Metal Factory , https://www.farrowingcratesfromchina.com