Detailed explanation of high-yield fertilization techniques for carrots: master the key points for higher yields
The carrot is a very popular root vegetable, and its planting area in China is very large. Carrots have very high nutritional value, so market demand for them is also very large. When growing carrots, if you want to increase carrot yields, fertilization work is very important. So how should carrots be fertilized? Today, the editor brings you high-yield fertilization techniques for carrots. Let's take a look below!
1. Fertilizer requirements and characteristics
Carrots grow very vigorously and have relatively high yields, so during growth, carrots have a very large demand for fertilizer. Professional survey data has also shown that for every 1000 kg or so of carrots produced, the requirements for pure nitrogen, phosphorus pentoxide, and potassium oxide fertilizer are 2.4:0.8:5.7 kg respectively. At different growth stages of carrots, the demand for nutrients also differs greatly. Generally, in the second month after sowing, the absorption of various nutrient elements is not very large. Usually, when the roots begin to expand in the middle and late stages, demand begins to increase, and nutrient absorption also increases along with the increase in growth. Potassium is needed the most, followed by nitrogen and phosphorus.
2. Application of base fertilizer
The root distribution of carrots is relatively deep, so when growing carrots, we must first pay attention to doing a good job in soil selection. Carrots are suitable for growing in fertile, soft sandy loam soil. Before sowing, we should also do a good job in soil preparation, plow the soil deeply, and apply sufficient base fertilizer. Sufficient base fertilizer is the key to ensuring the early growth of carrots. If the base fertilizer is insufficient, it is very unfavorable for the germination of carrot seeds. The base fertilizer is mainly decomposed farmyard manure, usually about 2200 kg per mu. Then combine it with an appropriate amount of compound fertilizer to ensure that carrot growth has sufficient nutrients.
3. Timely topdressing
When growing carrots, we should not only apply sufficient base fertilizer, but also pay attention to doing a good job in topdressing. Generally, topdressing should be done about two to three times. The first fertilization should be carried out about four weeks after carrot seedlings emerge and when about 3-4 true leaves have grown. The fertilizer is mainly compound fertilizer such as potassium sulfate. Then, when carrots are thinned to a fixed stand, carry out the second topdressing, and the fertilizer can be the same as the first time. Finally, carry out the third topdressing during the carrot root expansion stage. The fertilizer for each topdressing can remain unchanged, but note that each application should be about 5 kg more than the previous one.
4. Spraying foliar fertilizer
In addition to doing a good job with base fertilizer and topdressing, we should also pay attention to spraying an appropriate amount of foliar fertilizer. During growth, carrots not only have a large demand for major elements such as nitrogen, phosphorus, and potassium, but also for trace elements such as boron. Carrots also have a relatively large demand for boron, so we should supplement boron for carrot plants by spraying foliar fertilizer. Generally, it should be sprayed once during the seedling stage and once during the peak leaf growth stage. During the fleshy root expansion stage, it can be sprayed with boric acid solution or borax solution.
The above is a brief introduction to high-yield fertilization techniques for carrots. That is all for today's introduction. This article is for reference only, and I hope it can help everyone!