2. Ploughing and fertilizing the soil surface layer, with 2000kg of organic fertilizer, 30kg of phosphorus and potassium fertilizer and potassium fertilizer10kg per mu.
3. Generally, the middle and late June 65438+1October to the middle and early June165438+1October is suitable for moderate planting. You can choose to drill, the row spacing is 30cm, the hole spacing is 15cm, the precision sowing is 2-3 seeds, the seed consumption per mu is about 4kg, and the soil is covered 2-3cm after sowing.
4. Check and replenish seedlings immediately after germination of cultivation techniques to avoid the soil layer being too wet. The fertilizer for seedlings is mainly fertilizer solution, which should be poured 1 time 5~6 days after the seedlings are completely planted, so as to avoid drenching the bean cores. When the height of the seedlings is 30cm, it is necessary to cultivate the soil, mow the grass and loosen the soil to protect the seedlings, and apply compound fertilizer 10kg per mu during the flowering and pod setting period, and keep the soil moist. When the field is dry, you can "walk the mountains and rivers" for irrigation and rapid irrigation and drainage.
5. When the bacterial wilt caused by pest chilling injury occurs, use 70% imported thiophanate-methyl 800 times liquid sprayer per mu; To control liriomyza sativae, a 1 000-fold liquid sprayer can be used once every1week after emergence; To prevent the seedlings from being damaged, a 45 ml sprayer can be used before sowing. When the temperature is below -3℃, it is very easy to fall down due to icing. Cover the insulation with broken straw or chaff.
Under normal circumstances, crop rotation can be effectively carried out, which will essentially reduce the occurrence of pests and diseases. However, if diseases and insect pests occur, or drug intervention is carried out as soon as possible, the further aggravation of diseases and insect pests will lead to extremely poor harm to production.
Cultivation techniques. When the seedlings grow to about 557cm, 5-7.5 kg of compound fertilizer can be used per mu to raise seedlings. Seedlings with a height of 50-35cm should be placed on a shelf to facilitate the release of vines. After being put on the shelf, it can be combined with soil cultivation and weeding, and 60KG compound fertilizer can be applied at the flowering and pod setting stage of 1 mu. In order to increase the number of pods and improve their quality, trace element fertilizers can be applied outside the roots in combination with insects during this period. The way is to spray leaves with 250 times of potassium dihydrogen phosphate aqueous solution in sunny afternoon, and spray leaves with 500 times of borax solution after 1 week.