Amaranth and Chinese cabbage are first- and second-year-old herbaceous plants that can form leaf balls. Amaranth and Chinese cabbage mainly use leaves as product organs. The sufficient supply of nitrogen can increase chlorophyll content and increase photosynthesis intensity. The leaves are dark green and thick, which is conducive to the expansion of the outer leaves and the filling of the leaf cells. Phosphorus can promote cell division and The differentiation of leaf primordia accelerates the formation of leaf globules and promotes root development. Potassium enhances photosynthesis and promotes the manufacture and operation of organic matter in leaves. Amaranth and Chinese cabbage are high-demand fertilizer crops. The demand for NPK is very large. It is determined that for every 1000kg of leek or Chinese cabbage, 1.77kg of nitrogen and 0.81kg of phosphorus pentoxide should be absorbed from the soil. The potassium oxide was 3.72 kg, and the ratio was 2.2:1:4.6. In order to guarantee the high quality and high yield of Chinese chives and Chinese cabbage, according to the technical requirements of pollution-free vegetable production, the following fertilization techniques are proposed for the growth characteristics of leek and Chinese cabbage and their fertilizer requirements:
1. Fertilization principle: mainly based on organic fertilizer, supplemented by chemical fertilizer; base fertilizer is mainly supplemented by topdressing.
2. Apply enough base fertilizer. Amaranth and Chinese cabbage have a fast growth rate and a large amount of growth, and a large amount of organic fertilizer is required as a base fertilizer. Generally, 4000-5000kg of high-quality decomposed organic fertilizer should be applied per acre, which can be applied or grooved. On this basis, 40-50kg of amaranth and Chinese cabbage special fertilizer should be applied per mu to meet the growth and development needs of amaranth and Chinese cabbage.
3, look at Miao Qiao Shi top dressing. The first is to apply the seedling fertilizer. In the soil with low fertility, 5 kg of special fertilizer for amaranth and Chinese cabbage per acre, and a small amount of seedling fertilizer can be applied to promote the growth of seedlings and to develop seedlings and weak seedlings to strong seedlings. The second is to apply the heart and fat. Amaranth and Chinese cabbage are in a prosperous growth period in the heart of the heart and the ball, and the growth per plant can reach 75-100 grams per day. It is necessary to apply fertilizer in time, and apply 15-25kg of special fertilizer for amaranth and Chinese cabbage. This can not only improve the yield and quality of amaranth and Chinese cabbage, but also increase the commodity rate of amaranth and Chinese cabbage.
1. Fertilization principle: mainly based on organic fertilizer, supplemented by chemical fertilizer; base fertilizer is mainly supplemented by topdressing.
2. Apply enough base fertilizer. Amaranth and Chinese cabbage have a fast growth rate and a large amount of growth, and a large amount of organic fertilizer is required as a base fertilizer. Generally, 4000-5000kg of high-quality decomposed organic fertilizer should be applied per acre, which can be applied or grooved. On this basis, 40-50kg of amaranth and Chinese cabbage special fertilizer should be applied per mu to meet the growth and development needs of amaranth and Chinese cabbage.
3, look at Miao Qiao Shi top dressing. The first is to apply the seedling fertilizer. In the soil with low fertility, 5 kg of special fertilizer for amaranth and Chinese cabbage per acre, and a small amount of seedling fertilizer can be applied to promote the growth of seedlings and to develop seedlings and weak seedlings to strong seedlings. The second is to apply the heart and fat. Amaranth and Chinese cabbage are in a prosperous growth period in the heart of the heart and the ball, and the growth per plant can reach 75-100 grams per day. It is necessary to apply fertilizer in time, and apply 15-25kg of special fertilizer for amaranth and Chinese cabbage. This can not only improve the yield and quality of amaranth and Chinese cabbage, but also increase the commodity rate of amaranth and Chinese cabbage.
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