First, use excellent varieties. In autumn, green beans should be planted with vines, not dwarf varieties. Red flowers and white pods, Dongyin No.1, etc. are all acceptable.
Second, moderate planting. * * * The best sowing date is around the autumnal equinox (which can be moderately advanced in mountainous areas), and it is forbidden to sow early, because the average daily temperature of green beans exceeds 27℃, and it is not allowed to blossom and pod.
Third, plow the land carefully and apply sufficient fertilizer. After turning over the ground, a 1 m wide border was made. Ditching in the middle of the border, applying 25 kg of ternary compound fertilizer 1 mu or more than 1000 kg of organic fertilizer (column fertilizer), two rows per border, with a spacing of 25-30 cm. 4-5 seeds per hole. After sowing, cover with shading film or straw. Avoid soil degradation after thunderstorm and endanger seedling emergence. Uncover the film immediately after emergence. Those who cover with straw can leave the straw in rows to cover the soil layer, which can keep the soil moisture reasonably and is beneficial to the growth and development of green beans.
Fourth, put it on the shelves immediately and innovate management. Replenish seedlings once after emergence, leaving 3-4 plants in each hole. Apply thin fertilizer every 7- 10 days, and the seedlings will stand upright immediately when they grow to 15-20 cm. Grape trees were introduced, and heavy fertilizer was applied once at flowering stage, with urea solution 15KG per mu and water irrigation.
Pest control. The pests and diseases of green beans planted in autumn are relatively light and generally do not need to be prevented. The main pests and diseases are budding insects and soybean borers. Bud worms can be controlled with 2000 times solution of 10% acetamiprid, while Pieris rapae can be sprayed with 2000 times solution of organic pesticide Haizheng pesticide at flowering stage, and the flowers that fall to the ground should also be sprayed with pesticides, because the Pieris rapae larvae hurt the flowers first, and there are Pieris rapae larvae in the fallen flowers. After spraying pesticides on floor-standing flowers, the source of insects can be completely solved.
The above is my detailed introduction. I hope it will be helpful to everyone after reading it. If you have other comments, you can discuss them together in the message area below.