Double-season rice one-time full-layer fertilization

The double-season rice one-time full-layer fertilization technology is mainly based on the rice fertilizer requirement, soil fertility characteristics and fertilizer effect, and the nutrients required for the whole growth period of rice are scientifically formulated into special-purpose formula fertilizer, and the base fertilizer is applied once before transplanting. Into, combined with farming measures, so that soil and fertilizers are combined to achieve the purpose of fertilizing soil and fertilizing rice. The technical points are:

1. Fertilizer formula. The dry matter accumulation and nutrient uptake of the aboveground part of high-yield double-season rice are mainly in the middle and late growth stages. However, it is required that the soil in the early stage of fertility has a large fertilization intensity, and the main nutrient content required for the production of rice per unit area is substantially constant. Every 100 kilograms of rice produced. It requires nitrogen 2.1-2.4 kg, phosphorus pentoxide 0.9-1.3 kg, potassium oxide 2.1-3.3 kg, nitrogen: phosphorus pentoxide: potassium oxide is 1:0.43:1.

2. Fertilizer manufacturing technology. Using modern fertilizer granulation technology and coating technology, adding appropriate amount of different types of clay minerals to the fertilizer and coating the fertilizer with clay minerals can delay the release of fertilizer, which can meet the nutrient of double-season rice during the whole growth period. The demand can increase the utilization rate of fertilizer.

3, full-layer base fertilizer deep application technology. That is, before the last ploughing of the double-season rice in the early and late rice transplanting, under the premise of controlling the soil moisture, all the fertilized fertilizers are applied, and the farming measures are combined to make the fertilizer and the whole ploughed soil fully mixed. Soil and fertilizer blend together.

Double-season rice one-time full-layer fertilization technology can fully exert the adsorption capacity of soil nutrients, avoid ammonium nitrogen ammonia volatilization and “nitrification-denitrification” loss and leaching loss of various nutrients, and improve the utilization of fertilizer nutrients. It can form strong soil fertility in the early stage of rice growth, promote early rice fast-growing, and improve the growth potential of the early growth stage; it can guide the rice roots to lower the line to ensure the growth of rice in the middle and late growth stage. Strong absorption, no premature aging; can promote soil nutrient release, enhance soil fertility, and improve soil nutrient availability.

Excerpt from: Fujian Science and Technology News


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