So what fertilization techniques should farmers pay attention to if they want to increase the yield of green beans? Let's take a look at it next!
1, fertilizer requirement characteristics
Kidney bean has a well-developed root system, which is suitable for growing in loose and fertile soil with good drainage and air permeability, and is not tolerant to saline-alkali and continuous cropping.
During the whole growth and development period, kidney beans need more nitrogen and potassium fertilizer, less phosphorus fertilizer and more nitrogen fertilizer, but the root system has poor nitrogen fixation ability. Therefore, it is necessary to ensure the supply of nitrogen when planting to prevent poor growth due to lack of nitrogen, but excessive application of nitrogen fertilizer will lead to a decrease in the number of flowers and pods.
Potassium fertilizer is generally applied in the middle and late growth period, and phosphorus fertilizer is generally applied in the early growth period. Potassium fertilizer can make kidney bean swell, increase yield and prevent premature aging. A small amount of calcium, boron and molybdenum fertilizers are needed in the later stage. Calcium fertilizer can improve disease resistance and prevent leaves from falling off, while boron and molybdenum can promote growth and development.
2. Fertilization principle
When planting, some farmers don't know enough about fertilizers and can't master scientific fertilization techniques. The following small series brings the principles of kidney bean fertilization: base fertilizer is the main fertilizer, supplemented by topdressing, rational use of organic fertilizer and inorganic fertilizer, more organic fertilizer, rational use of nitrogen, phosphorus and potassium, and supplementation of trace elements needed by plants such as molybdenum, zinc and boron.
High-yield fertilization techniques for kidney beans? Foliar topdressing method of mung bean
3. Apply sufficient base fertilizer
Kidney beans have a long growth period and need to absorb enough nutrients, so the best way to ensure adequate nutrient supply is to apply sufficient base fertilizer in the soil when planting. Base fertilizer can not only promote plants to germinate and branch as soon as possible, but also provide nutrients continuously in the later stage, avoid the appearance of kidney bean flowering and improve its flowering and fruiting.
Generally, 3000-4000 kilograms of organic fertilizer is applied per mu. When using 50-60 kg compound fertilizer, we should pay attention to the complete decomposition of organic fertilizer, otherwise a lot of heat will be released during decomposition, which will damage the root system of kidney beans and cause root burning, and in severe cases, the plants will die.
4. Rational topdressing
After applying sufficient base fertilizer, it is generally only necessary to topdressing 3-4 times, mainly in seedling stage, clumping stage and flowering and pod setting stage. Topdressing methods are also divided into root fertilization and foliar spraying.
Generally, kidney beans do not need topdressing at seedling stage, and soil and base fertilizer are enough for their growth. However, in the case of low nitrogen content in soil, some nitrogen fertilizer should be applied appropriately to ensure its normal growth.
In order to promote plants to grow lateral roots and increase the number of flowering and pod setting, nitrogen and potassium compound fertilizer 10- 15kg can be applied at this time, and at the flowering and pod setting stage, pods are just set. At this time, high-concentration compound fertilizer 15-20 kg can be applied to promote the robust growth of plants, accelerate pod setting and increase the yield.
In addition, seedlings are prone to element deficiency symptoms at seedling stage, which leads to abnormal leaf color and growth status. At this time, 1.9% zinc sulfate dissolved oxygen can be sprayed for 2-3 times, low concentration ammonium molybdate solution can be sprayed during flowering and pod setting, and low concentration urea and potassium dihydrogen phosphate solution can be sprayed during flowering.
Green beans are leguminous crops that bloom and pod continuously and need a lot of nutrients. If the nutrient supply is insufficient, they will bloom and pod irregularly at intervals, shorten the harvest period, have low yield and poor quality.
Nutrients required for green beans to blossom and pod, in addition to root absorption and supply, are absorbed faster by leaves with better effect.
To sum up, there are still many planting techniques for planting green beans. If farmers want to increase the yield of green beans and pay more attention to fertilization techniques and management, I hope this article can help everyone.
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