Fertilization technology of konjac

Konjac we may not be common, it itself is highly toxic, but its tubers after edible, high nutritional value, more popular in the market, such as the most common konjac tofu is made of it as the raw material. The growth period of konjac is long, the yield is high, and the demand for fertilizer is also large, so how to fertilize konjac? Let's take a look.

1. Characteristics of fertilizer requirement

Konjac is a tuber plant with many roots and strong absorption. it needs 16 elements during the whole growth period, and has a great demand for nitrogen, phosphorus, potassium, calcium, magnesium and other elements in the soil. According to research data, for every 1000 kilograms of konjac produced, it consumes 5-6 kilograms of nitrogen, 4-5 kilograms of phosphorus and 7-8 kilograms of potassium. Do not use chicken manure when fertilizing konjac, and keep a certain distance between fertilizer and tuber. Organic fertilizer or farm manure must be applied after retting and ripening to avoid burning tubers.

2. Principles of fertilization

Amorphophallus absorbed less nutrients from the soil in the seedling stage, and began to absorb nutrients quickly from the soil after entering the growing period, while in the tuber expansion stage, the nutrient uptake reached the peak. Therefore, attention should be paid to base fertilizer, which accounts for 70% and 80% of the total amount of fertilizer applied, mainly organic fertilizer, supplemented by chemical fertilizer, and little or no topdressing.

3. Apply sufficient base fertilizer

In the planting prospect combined with soil ploughing, 3000-5000 kg of high-quality mature organic fertilizer and 60-80 kg of compound fertilizer are applied per mu, and 50 kg of calcium phosphate and potassium chloride can also be used instead. When the base fertilizer is applied to the bottom of the sowing ditch, it is evenly mixed with the soil, and the fertilizer soil is covered with about 3-5cm, so as to avoid direct contact between taro and fertilizer and affect germination.

4. Reasonable topdressing

Generally need topdressing twice, the first time in the seedling stage, can be combined with intertillage weeding, the application of organic fertilizer 30-40 kg and compound fertilizer 15-25 kg per mu, urea and potassium sulfate 10-12 kg can also be used instead of 10-12 kg to accelerate seedling growth. The second time in the head-changing period, combined with intertillage, 30-50 kg of organic fertilizer and 30-40 kg of compound fertilizer per mu, urea and potassium sulfate 20 kg can also be used instead.

The above is the introduction of Konjac fertilization technology, hope to help you, want to know more related knowledge, please follow us.