Green beans, also known as kidney beans, are rich in nutrients and have a good taste. They are a favorite vegetable. In the process of planting green beans, it is inevitable to be infested by pests and diseases, which is a problem that many vegetable farmers are very annoyed. So what about the pests and diseases that occur during the cultivation of green beans? Let's take a look at the pest control measures and planting techniques for green beans. 1. Selection of bean varieties Choose high-quality, disease-resistant, adaptable, and good-quality varieties, such as Green Dragon, Bean King, 83-A, 83-B, White is not old, Purple Bean, August busy. The live seed quantity per 667 m2 is 3 to 4 kg. 2, seed treatment 2.1, drying treatment The screened seeds are air-dried for 12 to 24 hours, but exposure is strictly prohibited. 2.2, stimulation agent treatment Add 1 kg of seeds to Rhizobium or Ammonium Molybdate 2 to 5 g, then dissolve with a small amount of water and mix with the seeds. 3, soil preparation Choose the plots that have not been planted with legumes for 3 to 4 years, and apply 3,000 to 5,000 kg of high-quality organic fertilizer, 6.5 kg of urea, 50 kg of superphosphate, and 8 kg of potassium sulfate per 667 m2 of land preparation. Make a small sorghum 10 to 15 cm high. 4, sowing beans 4.1, sowing date Seeding with dry seed or seedling transplanting is carried out from late April to mid-May, when the ground temperature at 10 cm has stabilized above 10 °C. Seedling transplanting must be sown 15 to 20 days in advance, and seedlings are grown with nutrients. 4.2, seeding method According to the requirements of the line spacing, dig a point on the spot, sowing 3 to 4 seeds per hole, then covering the soil 3 to 4 cm and pressing it slightly. If the soil is not good at the time of sowing, it should be watered for 2 to 3 days in advance. 4.3, seeding density The dwarf species are planted at 5,000 to 5,500 points per 667 m2, and the row spacing is (40 to 45) cm × 30 cm; the vine species are planted at 2,300 to 3,000 points per 667 m2, and the row spacing is (70 to 80). Cm × (30 to 35) cm. 5. Field management of kidney bean cultivation 5.1, seedling management After the emergence of the bean, the plant is prone to excessive vegetative growth before flowering. Therefore, it is generally not watered, and the cultivating and weeding is carried out 2 to 3 times to promote the first inflorescence and the combination of the soil during the cultivating. It is found that the lack of seedlings should be transplanted in time to replant the seedlings. The vine variety is combined with watering and top dressing for 1 time before the vines are scaffolded, and 500 to 1 000 kg of decomposed and diluted manure or 200 kg of decomposed chicken manure per 667 m2. When seedlings are transplanted, when the seedling age is 20 days and the seedlings have 2 compound leaves, they are planted in time. 5.2, flowering and pod management The principle of watering is that the pods are not watered in the early stage, and the soil is kept dry afterwards. When the first inflorescence pods sit and grow to 3 to 4 cm long, 8.7 kg of urea and 2-4 kg of urea are applied per 667 m2 of watering in combination with watering; after entering the flowering pod stage, every 667 m2 is applied. Urea 4 ~ 5 kg, potassium sulfate 2 ~ 4 kg. The vine species can also be topdressed 1 or 2 times depending on the growth. In this period, 0.2% potassium dihydrogen phosphate solution or 2% calcium perphosphate leaching solution + 0.3% potassium sulfate can be used for 2 to 3 foliar top dressings. 5.3, plant adjustment When the vines are vines, they should be inserted into the racks (or slings) in time, and the vines should be put on shelves. Remove the old leaves and diseased leaves in the lower part of the plant in time to facilitate ventilation and light transmission. 5.4, ​​harvesting According to the characteristics of the variety, when the tender pods grow into qualified products, they are picked in time to prevent aging. To pick light, do not hurt the inflorescence, can increase the yield by 10% to 20%. 6, bean disease pest control 6.1, disease prevention In the early stage of the disease, rust is sprayed with 15% triazolone wettable powder 2,000 times solution or 2.5% enemy de-emulsified milk 4 000 times solution, and then prevented once every 15 days. Anthracnose is treated with 50% thiophanate-methyl WP 800-1000 times solution, or 50% WP 2,000 times solution, or 80% anthrax WP-600-800 times solution spray every 7 days. Spray once every ～10 d, even spray 2~3 times. 6.2, pest control The control of red spider can be sprayed with the focus on the back of the blade at the beginning of the attack, and the rotation is controlled by spraying 1.8% avermectin emulsifiable concentrate 3,000 times and 15% fluorenone emulsifiable concentrate 1500 times. To control the bean mites, the first dose can be sprayed during the full bloom period or the 2nd instar larvae, using 1.8% avermectin EC 3 000 ~ 4 000 times, or Bt emulsion and 2.5% deltamethrin EC After mixing in a ratio of 10:1, the water is diluted to 800-1000 times liquid spray control, and lepidopteran pests such as cotton bollworm can be treated simultaneously, sprayed once every 7 days, and even sprayed 2 or 3 times, usually in the early morning. Spray when open, but not on flowers. For the control of Liriomyza sativae, it can be used with 1.8% avermectin EC from 3,000 to 4,000 times, or 10% imidacloprid 2,000 to 3,000 times, or 15% Regent in the early stage of spawning to the beginning of incubation. Suspending agent 1 000 ~ 1500 times liquid spray control.
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