Detailed Explanation of Mung Bean Planting Time and Fertilization Technical Points

Mung bean is a legume food with heat-clearing and detoxifying effects. Generally, during the hotter summer days, everyone cooks a bowl of thick mung bean soup to relieve the summer heat. Mung bean has high nutritional and health value and is planted throughout our country, with relatively low requirements for the growing environment. Let's take a look below at the detailed explanation of mung bean planting time and fertilization technical points.

I. Mung Bean Planting Time

Mung bean has a short growth period and a long suitable sowing window, and in many places it can be sown either in spring or summer. Generally, sowing can be done once the soil temperature reaches 16-20°C. In most plots with irrigation conditions, the sowing period for mung bean is from May 15 to 30; in sandy hill plots without irrigation conditions, sowing is mostly done from June 12 to 15. Generally, spring sowing is from mid-to-late April to early-to-mid May, and summer sowing is from late May to early-to-mid June. In the north, the suitable sowing period is short; the annual single-crop spring sowing period is from early May to the end of May, and the summer sowing period is from late May to early June. In Northeast China, spring sowing is in mid-May and summer sowing is in mid-to-late June. Note that mung bean is a warm-loving crop; if spring sowing is too early, individual development will be poor, the growth period will be prolonged, and yield will decrease. For summer-sown mung bean, earlier sowing is better: seedlings grow robustly, and the flowering and pod-setting stage falls during the high-temperature and rainy period, which is favorable for flower and pod formation, resulting in more pods, more seeds, heavier seeds, and higher yield.

II. Mung Bean Fertilization Technical Points

1. Fertilizer Requirements

Mung bean is a crop with high fertilizer demands. According to relevant data, for every 100 kg of mung bean, it will absorb 9.68 kg of nitrogen, 2.93 kg of phosphorus, and 3.51 kg of potassium. Therefore, planting mainly requires three types of NPK compound fertilizers, with a nitrogen-based formula, or even combined with the other two fertilizers, so that it grows smoothly and both yield and quality are increased.

2. Fertilization Principles

Mung bean is a plant with deep roots and large cotyledons. Therefore, when planting, the soil must be strictly prepared, with deep plowing and fine harrowing, so that the soil is uniform from top to bottom and from deep to shallow, facilitating smooth seedling emergence. Mung bean itself has rhizobia and can absorb nitrogen, but fertilization is still needed, otherwise yield will be low. When fertilizing, the principle should be followed of mainly using farmyard manure, with inorganic fertilizer as a supplement, mixing farmyard manure and inorganic fertilizer, fully applying base fertilizer, and topdressing in a timely manner.

3. Fertilization Methods

Before planting, plow the soil, then apply base fertilizer. This base fertilizer is mainly farmyard manure such as human feces and urine, plant ash, and animal manure at 1000-3000 kg/mu. Topdressing is generally done at the seedling stage and flowering stage. Fertilizing at the seedling stage can make seedlings grow quickly and robustly, applying 10 kg of urea or high-nitrogen compound fertilizer each time, with corresponding increases or decreases according to actual conditions. However, at the branching and flowering pod stages, foliar fertilizer can be sprayed. The foliar fertilizer can use urea and potassium fertilizer combined with other elements, so that the plant can absorb them as quickly as possible and the fertilizer utilization rate is improved.