How to fertilize sesame for high yield? Detailed explanation of key fertilization techniques
Sesame is one of the main oilseed crops in China, and its application value is very high. Moreover, sesame is also used in China to make various dishes and is welcomed by many people. When growing sesame, the higher the yield, the better. And if you want to increase the yield, then fertilization work is very important. So how should sesame be fertilized to achieve high yield? Below, the editor will give you a brief introduction. Let's take a look together!
1. Apply sufficient base fertilizer
When planting sesame, pay attention to applying sufficient base fertilizer at one time. Sufficient base fertilizer can enhance the growth capacity of the sesame root system. It promotes the growth of the main root, increases the number of lateral roots, and promotes nutrient absorption. Under the condition of sufficient base fertilizer, sesame seedlings can develop early, their leaf area can be expanded, and sufficient organic matter can be provided for sesame growth, meeting the nutrients needed for sesame growth. Usually, about 2500 kg of decomposed farmyard manure should be applied per mu, together with an appropriate amount of compound fertilizer. Among this, an appropriate amount of phosphorus and potassium fertilizer should be added to the base fertilizer, which can increase the oil content of sesame.
2. Topdressing seedling fertilizer
During the seedling stage of sesame, although the demand for fertilizer is not very large. But if the sesame seedlings are thin and weak and grow poorly, then reasonable topdressing should be carried out according to the actual situation, mainly to cultivate strong seedlings and promote flower and leaf differentiation, which is very important. The fertilizer absorption capacity of sesame seedlings is relatively poor, so when cultivating and weeding, attention should be paid to supplementing an appropriate amount of nitrogen fertilizer. To promote the early development of sesame seedlings, the best time for topdressing quick-acting fertilizer should be during flower bud differentiation, and about 4 kg of urea should be applied each time. The fertilization method is mainly furrow application and spot application to ensure its fertilizer efficiency.
3. Flower bud fertilizer
At the beginning of the flowering stage of sunflower, it is the suitable period for topdressing flower bud fertilizer. During the flower bud stage, sunflower mainly grows both vegetatively and reproductively. Topdressing flower bud fertilizer can ensure flower bud differentiation at the top and provide sufficient growth nutrients for sesame. It can also prevent premature senescence in sesame. When topdressing flower bud fertilizer at the bud stage, the fertilizer is usually mainly nitrogen fertilizer, and fertilizers such as urea or ammonium sulfate can be topdressed. According to professional survey data, when topdressing at this period, 1 kg of pure nitrogen can increase sesame yield by about 4 kg.
4. Foliar fertilizer
Foliar fertilizer for sesame is also very important. During the bud stage and early flowering stage of sesame, a borax solution should be used to spray the leaves. This promotes pollen germination and pollen tube growth, improves the pollination and fertilization rate, and thereby increases the oil content. Then, during the bud stage and early flowering stage of sesame, carry out the second foliar topdressing work. The fertilizers are mainly potassium dihydrogen phosphate, urea, etc., or topdressing can also be carried out during the full flowering stage. This can effectively avoid premature senescence in sesame and improve the yield and quality of sesame.
The above is a brief introduction to how to fertilize sesame for high yield. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!