First, the requirements of the soil conditions. Pea soil requirements are not strict, but the ph value of 6.0-7.2 loam or clay soil is appropriate. Below the pH of 5.5, the disease is easy to occur and the rate of scarring is reduced. Since pea root exudates affect the rhizobia activity and root growth of the following year, peas must not be contiguous. Luminous Signage,Fire Signs,,Glow In The Dark Pigment JINAN REALGLOW CO.,LTD , https://www.realglowsign.com
Second, the need for fertilizer characteristics. During the vegetative growth stage of peas, the growth was small and nutrient absorption was also low. After flowering and sitting, the growth amount increased rapidly, and the nutrient uptake also increased significantly. The peas absorbed nitrogen, phosphorus and potassium in their lifetime. The most common, followed by potassium, phosphorus is the least. Although the root nodule of pea can fix soil and nitrogen in the air, it still needs to rely on soil nitrogen supply or nitrogen fertilizer supplementation. The nitrogen supply status of root nodules is often considered in the application of nitrogenous fertilizer. In the early stage of fertilization, if nitrogen is applied too much, the nodule formation will be delayed and the stems and leaves will grow too luxuriantly to cause flower failure; if nitrogen is insufficient during the harvest period, the harvest period Shorten the output and reduce it. The application of phosphorus and potassium fertilizers can promote the formation of pea root nodules, prevent leggy and enhance disease resistance.
Third, fertilization technology
1. Basal fat: The main root of pea develops quickly and rapidly. Before the seedlings have been unearthed 6 days after sowing, the main roots will elongate 6-8 cm. When the seedlings have been unearthed 10 days after sowing, there are more than 10 rough root systems. When the two compound leaves are unfolded, the main root can be as long as about 16 cm. Therefore, basal fertilizers should put special emphasis on early application. The spring sowing in the north should apply basal fertilization in the autumn cultivation, while the autumn sowing in the south should also apply basal fertilization before sowing, so as to ensure the seedlings are full and the seedlings are strong. Generally, 3000-5000 kg of organic fertilizer, 25-30 kg of superphosphate, 10 kg of urea, 15-20 kg of potassium chloride, and 100 kg of plant ash are applied per acre.
2, top dressing: According to the growth of peas, the first time in the beginning of flowering can be top dressing, generally apply 5 kg of urea, 5 kg of potassium chloride or 15-20 kg of ternary compound fertilizer, combined with watering; After sitting on the urn, 7.5 kg of urea, 7.5 kg of potassium chloride or 20-25 kg of ternary compound fertilizer are collected per mu, and watering is combined.