The latest Fertilizer requirement of Rice

Rice can be said to be the largest food crop in China, and rice is the staple food of most provinces every day. Rice is basically planted in all parts of our country. When planting rice, fertilization is essential if you want to improve rice yield. When we fertilize rice, we first need to understand the fertilizer requirements of rice. So Xiaobian today will briefly introduce the law of fertilizer demand for rice for everyone. Let's take a look at it together.

1. Regularity of fertilizer requirements

During the whole growth period of rice, more than ten kinds of nutrient elements are needed. However, the amount absorbed will decrease due to insufficient soil supply. Nitrogen, phosphorus and potassium are the main nutrients, and the absorption of nitrogen, phosphorus and potassium by rice will vary according to yield and growth period. For example, rice has a greater demand for nitrogen at its tillering peak and heading and flowering stages. Applying nitrogen fertilizer at this time can improve starch yield and quality. However, if nitrogen is insufficient before heading, it will cause insufficient grain nutrition and reduce quality.

2. Phosphorus absorption

The demand for phosphorus in rice is also relatively large, and we naturally cannot ignore the supplement of phosphorus when fertilizing. However, there was no significant difference in phosphorus uptake by rice in different growth stages. But the period of bigger absorption is generally in tillering stage and young panicle differentiation stage. Phosphorus is very important for rice growth. It can promote the growth and development of rice roots, promote nutrient absorption, and can also enhance tillering ability and improve grain fullness.

3. Potassium absorption

Then there was the absorption of potassium. The absorption of potassium by rice is also very large. Generally, the main period of potassium absorption is from panicle differentiation to heading and flowering stage. Then, it is at the tillering stage and panicle differentiation stage of rice. Potassium is an essential nutrient for rice to synthesize starch, cellulose and transport nutrients. It can improve root vigor, delay leaf senescence and improve pest resistance.

4. Trace elements

In addition to the above several common elements, silicon and zinc are two trace elements that also have a greater impact on the growth of rice. Rice stems and leaves contain about 15% silica. Rational application of silicon fertilizer can enhance plant resistance to pests and lodging. Therefore, the purpose of improving yield can be achieved, and the rice quality can also be improved. Zinc fertilizer can increase the number of grains per panicle, 1000-grain weight, etc., reduce the empty grain rate, and play a role in increasing yield, especially in calcareous alkaline soil.

The above is a simple introduction to the law of rice fertilizer. Today's introduction is here, this article is for reference only, I hope to be able to help you oh!