The principle of fertilizing sugarcane is: Fertilizer is an important material basis for promoting the growth of sugarcane. Only by mastering the rules of fertilizer application can we achieve targeted and reasonable fertilization. So, how to apply fertilizer?

1. Types of fertilizers to apply

Sugarcane is a crop with a well-developed root system, and fertilization should be based on meeting the nutrient needs of sugarcane seedlings

Fertilizer can Divided into three categories: nitrogen, phosphorus and potassium. Because sugarcane seedlings are malnourished or lack potassium and cannot grow normally, they lack a lot of nutrients required. Therefore, the types of fertilizers that need to be applied include: nitrogen fertilizers, slightly acidic fertilizers, organic fertilizers, humic acid fertilizers, etc.

2. Farming system and fertilization technology

Sugarcane has different fertilizer requirements and fertilizer characteristics under different farming systems. For example, during spring sowing, the sowing density is low, the fertilizer utilization rate is high, the plants grow quickly, and the fertilizer utilization rate is low; kg, potassium 305 kg), in areas lacking phosphorus and potassium, 305 kg of phosphorus and potassium per mu need to be applied;

In areas lacking potassium and calcium, more than 50 kg of potassium fertilizer needs to be applied per mu; in drought and lack of rainfall, The area needs to apply more than 450 kilograms of pure nitrogen per acre; the areas with fertile planting land, sufficient water sources, and loose soil need to apply more than 60 kilograms of urea per acre. The expansion period of sugarcane rhizomes commonly used in production is the period when sugarcane requires greater fertilizer.

Because the sugarcane rhizome is smaller in size, has more water, and absorbs quickly during this period, it requires a larger amount of fertilizer. The sugarcane rhizome is larger in size, absorbs less water, and requires less fertilizer. The main methods of fertilization are mechanical fertilization and There are two cultivation techniques: furrow sowing. In addition, furrow and hole fertilization methods can also be used.

3. Sugarcane field management and fertilization technology

. The sugarcane fields are tilled, weeded, loosened, fertilized, etc. The fertilizing technology mainly refers to the frequency of fertilizing sugarcane, fertilizing methods, fertilizer ratio requirements, etc. Specifically, cultivating and weeding twice a year and fertilizing three times a year are important technical measures.

IV. Comparative test on the demand for organic fertilizers in different growth stages of sugarcane:

The purpose of sugarcane fertilization is to provide the nutrients needed for sugarcane so that it can develop normally and provide for later stages. Energy and nutrients. However, sugarcane will have different demands for nutrients during its growth. For example, when a sufficient amount of organic fertilizer is applied, a basic nutritional balance will occur between the vigorous growth period and the early growth period.

If sufficient organic fertilizer is not applied, there will be an insufficient supply of nutrients. The most suitable period for fertilizing sugarcane is before and after base fertilizer and during the seedling stage. Therefore, organic fertilizer should be used as base fertilizer before and after jointing and before germination. The main function of top dressing is to promote the growth of plant root systems and increase the plant's absorption and utilization rate of nutrients. At the same time, it also It should be noted that proper fertilization is also of great benefit to the growth and development of sugarcane.

If organic fertilizer is applied during the seedling stage, its effect can reach more than 70%. However, if enough organic fertilizer is applied, root absorption problems will occur; if organic fertilizer is continued to be applied, not only the fertilizer utilization rate will be low, but the soil will not be able to fully digest and absorb the nutrients in the fertilizer.