After the first 2-3 true leaves of the bean crop are mature, and the vines enter the rapid growth period, they will come to the third management period of the bean vegetable crop - the flowering period. Due to the successive appearance of leaves and flowers, we also have to keep up with the management of water and fertilizer, and at the same time, there are more details that need to be paid attention to, and the management of water and fertilizer for different legume crops has different points. Through the sharing of this article, you will have a better understanding of the management of the flowering period of legume crops.
Nutrient requirements of legumes during flowering
The flowering of legumes and vegetables is characterized by continuous flowering, which is different from the flowering and fruiting of many plants in spring. The need for phosphorus and boron increases during flower formation and development, and at the same time, it also needs enough mature leaves to produce the nutrients needed for flower development, and the leaves need potassium in the process of turning green and ripe. Therefore, before the emergence of flower buds, we mainly use balanced fertilizer in the selection of a large number of elements (nitrogen, phosphorus and potassium), which refers to compound fertilizers with equal proportions of nitrogen, phosphorus and potassium, such as: 15-15-15, 16-16-16, 17-17-17, 18-18-18, 19-19-19, 20-20-20 and other common balanced fertilizers in the market.
Now, with the improvement of fertilizer technology, water-soluble macro-element fertilizer is also added with medium and trace elements (there will be +te labeling), we can choose fertilizer with medium-sized element magnesium, which is more helpful for leaf aging and chlorophyll synthesis. Supplementing this type of fertilizer can effectively reduce the problem of premature yellowing of mature leaves due to magnesium deficiency.
Since the legume crop grows rapidly at this stage, the demand for water also increases. During this period we need to increase the frequency of watering, depending on the weather and soil moisture, every 5-7 days. Water each time until the soil is moist to a depth of about 15-20cm to avoid root rot. It is necessary to water thoroughly each time, specifically control the amount of watering, and water again with the slight dryness of the soil surface as a signal to avoid continuous wetness. Otherwise, excessive humidity can easily lead to root rot and cause plant death.
In the second stage of flower bud appearance, since the development of flowers requires more trace elements, especially boron, we can supplement trace elements through leaf spray when the flower buds appear for the first time. Boron can be supplemented by leaf spray or by root application. It is recommended to spray 1000-1500 leaves of boron, root application dilution 800 times with watering, because boron is a trace element plant demand is small, avoid excessive fertilization, cause boron poisoning.
Precautions for water and fertilizer management during flowering
1.The fertilization position is too close to the main stem (the root system of legume crops is shallow, so the amount of fertilizer used and the fertilization position should be strictly controlled in the process of fertilizer topdressing.
2.After entering the flowering period, it is necessary to properly control the water, which is conducive to the development of flowers, and too high humidity will cause flowers to fall off and fall flowers seriously.
3.The input of nitrogen fertilizer cannot be ignored, and nitrogen fertilizer is one of the important guarantees for the rapid growth of crops.
The above content is compiled and edited by the Ask Nong team, for reference only!
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