Seed price and planting method of mung bean

Mung beans, also known as green beans, green beans, planted beans, etc., are annual erect herbs of the cowpea genus of Leguminosae, native to India, Myanmar and other regions. It has been cultivated in China for more than 2000 years. Seeds are cultivated in both north and south. Starch can also be extracted to make bean paste, vermicelli and so on. Let's take a look at the seed price and planting method of mung bean.

How much is the mung bean seed per jin?

The price of mung bean seeds is about 810 yuan per jin, but it varies according to the quality, variety, origin and market of the seeds. Mung beans are cultivated in the Yellow River, Huaihe River basins and North China Plain provinces, especially in Sichuan, Henan, Shandong, Anhui, Hubei, Shaanxi, Shanxi, Jiangsu and Liaoning. The sowing amount per mu is generally 3-4 jin, and the yield per mu is about 200-300 jin.

Sowing method of mung bean

1. Soil preparation: mung bean has drought resistance, barren resistance, wide adaptability, deep root crop and hypertrophic cotyledons, and strict requirements for soil preparation. Deep ploughing and fine raking should be made before sowing to achieve consistency between upper and lower fruit and depth, otherwise seedling emergence will be affected.

2. Fertilization: before sowing, 2500-3500 kg of farm manure and 10 kg of calcium superphosphate were applied per mu of mung bean. If there is no time to apply fertilizer, appropriate amount of nitrogen and phosphorus fertilizer can be applied in the early growth stage to enhance the nitrogen fixation of root nodules.

3. Sowing time: the growth period of mung bean is generally only 60-120 days, and the suitable sowing period is very long, which can be sown in spring and summer. Spring sowing is from late April to early and mid-May, and summer sowing is in mid-and late June.

4. Sowing: before sowing, spread the seeds thinly on the mat for 1-2 days to promote germination and emergence. The sowing method is mainly strip sowing, with a row spacing of about 40 cm and a sowing depth of 3-5 cm.

Planting method of mung bean

1. Site selection and intercropping: mung bean has strong adaptability and can grow in general sandy soil, hillside thin land, black soil and clay. It is often intercropped with corn, sorghum, cotton, sweet potato, sesame, millet and other crops, but continuous cropping is avoided.

2. Deep ploughing and soil preparation: before sowing, mung beans should be deeply ploughed and fine raked, fine soil preparation, and raked flat, so as to loosen the soil, store water and preserve soil moisture, prevent soil consolidation, deficiency and soil consolidation, so as to facilitate seedling emergence and crop rotation.

3. Reasonable close planting: the planting density of mung bean should be determined with the characteristics of varieties and soil fertility. Generally, we should grasp the principles of dense early-maturing varieties, sparse late-maturing varieties, dense vertical type, sparse semi-trailing type, thinner trailing type, sparse fertile land, dense thin land, early planting and dense late planting.

4. Intermediate ploughing and weeding: after the first compound leaf of mung bean is unfolded, the seedlings are hoed for the first time, the seedlings are fixed and the second intermediate ploughing is carried out after the second compound leaf is unfolded, and the third deep ploughing and root cultivation is carried out at the branching period. middle tillage should be carried out until the ridge is closed.

5. Drainage and irrigation: mung bean needs less water in the seedling stage, and the flower and pod stage is the peak period of water demand. at this time, it should be irrigated in time in case of drought, but it is also afraid of flooding, such as too much water in the seedling stage will cause rotten roots and dead seedlings, and poor plant growth in the later stage will lead to a decrease in yield.

6. Rational fertilization: the root system of mung bean has the ability of fixing nitrogen, and there is often no fertilization in production, but in order to increase the yield of mung bean in medium and low yield plots, fertilizer should be increased, generally applying diammonium phosphate or nitrogen, phosphorus and potassium compound fertilizer of about 10 kg per mu.

7. Timely harvest: mung beans should be harvested as soon as they are ripe according to the situation, but a harvest is often needed for planting in a large area, and the timely harvest should be marked by the fact that the pods become brown and black, but the mature pods are easy to crack under high temperature conditions and should be harvested before the dew is dry in the morning or in the evening.

Disease and pest control of mung bean

1. Small land tiger

[harm] the young larvae often gather to feed on the heart leaves or the back of the leaves of the seedlings, often eat the leaves into a mesh, and the larvae after the 3rd instar bite off the tender stems of the seedlings from the ground and drag them into the hole, and the upper leaves are exposed outside the hole, resulting in lack of seedlings and broken ridges.

[control] ploughing the land, removing weeds, trapping adults and larvae, spraying 1000 times of trichlorfon or 2.5% deltamethrin or 3000 times of fruit and vegetable phosphorus before the 3rd instar of larvae.

2. Aphids

[harm] the main aphids that harm mung beans are bean aphid, pea aphid, cotton aphid, etc., among which bean aphid is the most harmful, generally reducing the yield by 20% to 30%, and 50% to 60%.

[control] 1.5% dimethoate powder or 2.5% trichlorfon powder equal to 2 kg per mu in the morning or evening, or 40% dimethoate emulsion 1000 times 500 times, or 50% malathion 100 times, or 50% phosphoamine EC 2000 times, etc.

3. Red spider

[harm] when the adults and nymphs suck plant sap on the back of the leaves, the yellow-white spots appear on the surface of the damaged leaves, and when the leaves turn yellow and dry, they burn in the field, and the plants fall leaves early, which affects the formation of grains and leads to a reduction in yield.

[prevention and treatment] 2000 times of omethoate emulsion, 1000 times of 50% malathion EC, or 2000 times of 50% dibromophos can be sprayed every 5 days for 2 times in a row.

4. Virus disease

[harm] mung bean can occur from emergence to adult stage, the leaves are mottled or green, the leaves are wrinkled, and the symptoms on pods are not obvious.

[prevention and treatment] at the initial stage of the disease, 20% virus A wettable powder 500 times or 15% virus Bike wettable powder 500 times or 700 times were sprayed.

5. Brown spot

[harm] in the early stage of the disease, there were water-stained brown spots on the leaves, and in severe cases, the disease spots fused into pieces, which dried up quickly, the damaged pods were brown, and in the later stage, the disease spots expanded and the pods dried up.

[prevention and treatment] at the initial stage of the disease, 50% carbendazim (carbendazim ·ethamyl) wettable powder 1000-1500 times + 75% chlorothalonil wettable powder 800 times, once every 7-10 days, continuous prevention and treatment for 3 times.

6. Root rot

[harm] the heart leaves turn yellow at the initial stage of the disease. if the root system is pulled out for observation, it can be seen that when the lower part of the stem and the upper part of the main root rot, the plant will wither and die.

[prevention and treatment] at the initial stage of the disease, 75% chlorothalonil 600 times liquid, or 15% carbendazim 600 times solution, 70% methyl topiramate 1000 times solution spray. Spray once every 7 to 10 days, 2 times in a row.

7. Leaf spot

[harm] small water soaked spots in the early stage, necrotic spots in the later stage, perforation and shedding, premature senescence of plants, flowering and podding stage, high temperature and high humidity.

[control] at budding stage, 50% carbendazim wettable powder or 50% benzoate 1000 times liquid was added with plant growth regulator, 7 times 10 times, spraying 2 times 3 times, to control the epidemic of the disease.

8. Powdery mildew

[harm] there are small white powdery disease spots scattered on the leaf surface. when the climate is suitable, the disease spots expand rapidly, the diseased leaves are covered with white powder, the young pods are deformed after being damaged, and the surface is also covered with white powder.

[prevention and treatment] at the initial stage of the disease, spray 15% trimethoprim wettable powder 1000-1500 times, or 20% trimethoprim EC 2000 times.