What fertilizer should I use to grow peanuts?

Peanut is one of the main cash crops in our country, and its planting area is also quite large, which is rich in nutrients such as fat and protein, and has high nutritional value to people. Fertilization is essential in the process of peanut growth. Fertilizing is the premise of improving peanut yield and quality. Let's take a look at what kind of fertilizer to use to grow peanuts.

Demand principle of Peanut Fertilizer

1. A large number of elements: the proportion of nitrogen, phosphorus and potassium in peanuts is 0.4: 1, nitrogen is the most, potassium is the second, and phosphorus is the least. Therefore, the application of a large number of element fertilizers should be mainly nitrogen and appropriate amount of potassium.

2. Trace elements: peanuts have the most demand for calcium, sulfur, magnesium and other elements. Calcium can accelerate the growth of peanut plants, sulfur can increase the protein content of nuts, and magnesium can promote the normal formation of peanut chlorophyll.

Principles of fertilization in Peanut cultivation

The main results are as follows: 1. organic fertilizer is mainly organic fertilizer, supplemented by inorganic fertilizer: organic fertilizer has all nutrients, which can increase soil aggregate structure, improve soil physical and chemical properties, benefit the activity of rhizobium and increase the source of nitrogen. Combined with chemical fertilizers can reduce the loss and fixation of inorganic fertilizers.

2. Apply sufficient base fertilizer, appropriate topdressing: organic fertilizer as base fertilizer, according to the growth situation, use quick-acting fertilizer timely and appropriately, at the same time, make a reasonable combination of nitrogen, phosphorus, potassium and micro-fertilizer. and foliar fertilizer was sprayed in the middle and later stages according to the growth situation.

What fertilizer should I use to grow peanuts?

1. Base fertilizer: base fertilizer includes base fertilizer and seed fertilizer. The fertilizer applied in combination with cultivated land before sowing is called base fertilizer, and the fertilizer applied centrally in sowing ditches or holes is seed fertilizer. Peanut base fertilizer accounts for more than 80% of the total fertilizer, and organic fertilizer should be combined with nitrogen, phosphorus and other fertilizers. The specific application method varies with the type and quantity of fertilizer, and generally should be dispersed and concentrated. Most of the soil preparation before sowing should be used as base fertilizer, leaving a small part combined with sowing and concentrated ditch application or hole application. In order to improve the efficiency of phosphate fertilizer, phosphate fertilizer and organic fertilizer can be compost for 15-20 days before fertilization. Seed dressing with rhizobium agent during peanut sowing can increase effective rhizobium bacteria, and seed dressing or soaking with 0.2-0.3% ammonium molybdate or 0.01-0.1% boric acid aqueous solution can supplement the trace elements needed for peanuts.

2. Topdressing: topdressing should be carried out timely according to the growth of peanuts, and topdressing at seedling stage should be carried out before the beginning of flowering. Generally, topdressing urea 80 kg / sq km, calcium superphosphate 150 kg / sq km, trench strip application. After flowering, gypsum powder 300 kg / square km and calcium superphosphate 150 kg / square km can be applied to increase the nutrition of phosphorus and calcium in the fruiting period. In the case of peanut podding and full fruit period without topdressing, 0.2% potassium dihydrogen phosphate and 2% urea can be foliar sprayed for 1 or 2 times, which can protect roots and leaves, and improve seed setting rate and fruit satiety rate.