Fertilization techniques for high yield of sesame

Sesame is an important oil crop and economic crop in China, which is planted in all regions of our country. Sesame is a fertilizer-loving crop, and there is a great demand for rainy fertility, so fertilization must be done well in order to achieve high yield. So how to fertilize sesame seeds? Let's take a look at the high-yield fertilization technology of sesame.

1. Apply sufficient base fertilizer

The application of sufficient fertilizer can promote the rapid growth of sesame root, promote the development of root system, increase the growth of main root, increase the number of lateral root, absorb more nutrients and water, plant and grow strongly, have broad leaves, enhance photosynthesis, and produce more flowers and seeds. The application of base fertilizer must be put in place at one time, and the main root layer of sesame is relatively shallow, and it is suitable to be applied in the soil layer of 10cm. The application amount of base fertilizer accounts for about 70% of the total fertilizer, generally mainly organic fertilizer or farm fertilizer, with nitrogen, phosphorus and potassium. Generally apply organic fertilizer or completely mature farm manure 2000-2500kg per mu, with 20kg phosphate fertilizer and 10kg potash fertilizer with a small amount of boron fertilizer.

2. Skillfully applying bud fertilizer

When sesame grows to the budding stage, it begins to enter the flower bud differentiation stage, which is the fastest period of vegetative growth, so it is very important to apply bud fertilizer skillfully at this time. Fertilization in the bud stage is mainly nitrogen fertilizer, supplemented by phosphorus and potassium fertilizer, using strip application or point application method, the fertilizer is applied into the soil layer at 10cm to facilitate root absorption and cover the soil after fertilization. It can also be spread by mixing fertilizer and soil, ploughing and weeding after fertilization, and watering in time after fertilization in case of soil drought, so as to exert fertilizer effect as soon as possible.

3. Heavy application of flower fertilizer

After entering the flowering stage, when sesame seeds grow most rapidly, they absorb the largest amount of fertility, accounting for 70% and 80% of the nutrients absorbed during the total growth period. Therefore, in order to meet the needs of plant growth, promote rapid plant growth, in order to make more flowering, more seeds, and increase yield, fertilization at flowering stage must be re-applied. Generally, 5-8 kg urea is applied per mu. In order to avoid root burning, it can be dissolved into low concentration of dissolved oxygen during fertilization, and ammonium sulfate per mu of 15kg can be applied at full flowering stage.

4. do a good job of foliar fertilizer

According to the experimental results, spraying 2-3 times potassium dihydrogen phosphate solution at flowering stage can increase the weight by 0.09 grams and increase the yield by 19%. The foliar fertilizer is sprayed at the early flowering stage for the first time, and then selectively sprayed for the third time according to the growth situation. Use potassium dihydrogen phosphate 200g-250g per mu, diluted with water about 50kg, spray foliar fertilizer should pay attention to the time, choose the best in cloudy or sunny evening, avoid the interference of high temperature or Rain Water, prevent water evaporation or be taken away by Rain Water, which is beneficial to be well absorbed by leaves.

The above is the high-yield fertilization technology of sesame brought by pro-agricultural network. I hope it can help you. If you want to know more about sesame planting, please pay attention to pro-agricultural network.