At present, greenhouse vegetables in early spring enter the peak season, which is the season of harvesting and listing; spring greenhouses enter the flowering period, and the open-cropped vegetables begin to harvest, but it is also the high incidence period of vegetable pests and diseases in protected areas. The main farming management of vegetable fields cannot be relaxed. Facility vegetable management needs to be fine At this time, tomatoes, cucumbers, eggplants, sweet peppers, radishes, cabbage and other crops grown in the greenhouse have been harvested and matured. At this time, the vegetative growth and reproductive growth of the crops are carried out at the same time, which is a critical period requiring water and fertilizer, and it is particularly important to strengthen the field management. Adjust the appropriate growth environment Although the temperature in early summer is high, it varies greatly. It is necessary to adjust the temperature and air humidity suitable for growth and development according to the external climate change and different crops. The physiological activity of cucumber is different from that of tomato and eggplant. Four-stage temperature regulation should be adopted. Cold-tolerant vegetables such as leaves and rhizomes should be kept in the air to avoid excessive night temperatures. Tomatoes, eggplants and other crops are kept at 40% to 50%; melon crops such as sweet peppers and cucumbers are 60% to 80%. Strengthen watering and topdressing According to the weather conditions, plant growth and soil conditions, watering and topdressing should be carried out. The topdressing should promote the integration of water and fertilizer technology. It is advisable to apply the “Christmas tree†and other instant fertilizers with comprehensive nutrition and reasonable ratio with drip irrigation. It is necessary to pour water in small water, and the amount of water per acre is 8 to 10 square meters to avoid flooding. 20 bags of carbon dioxide gas fertilizer per acre to increase indoor carbon dioxide concentration, improve photosynthesis efficiency, increase production and improve quality. Plant management Timely management of hanging vines, vines, lofting, pruning and snoring, cucumbers and tomatoes use the method of continuous desolate to prolong the results of the plants, and timely remove the lower yellow leaves, old leaves and diseased leaves; tomato in the first When the ear fruit grows to the green ripening stage, the lower leaves are destroyed, and the dark green leaves of the lower part of the cucumber are also destroyed in time to prevent the infection of downy mildew due to poor ventilation. Fruit management It is necessary to strengthen the auxiliary pollination and thinning and thinning; tomato and eggplant adopt natural pollination method to maintain the flavor and quality. The method of pollination can be used to assist pollination, or 2 boxes of bumblebee can be used to assist pollination. Tomatoes should be sprayed with an oscillating pollinator or conditioner when each flower is opened for 3 to 4 flowers per flower. If the flowers are sprayed when 1 or 2 flowers are opened, the fruit will only be 1-2 and affect the yield. . Remove excess flowers and fruits early. Cucumber does not need artificial aided pollination to form a melon. It is forbidden to use hormones to promote the expansion of young melon. Fruit harvested in time after ripening It can not only improve the rate of goods, but also prevent the fruit from falling and affecting the plant to continue the result. It is advisable to harvest it every morning. Open field thermostat crop planting The cucumbers, tomatoes, eggplants, peppers and pumpkins planted in the open field are suitable for planting at a suitable time. It is necessary to select the “cold tail warm head†for sunny planting. The temperature is stable at 10°C for five days and the temperature is stable at 13°C for 10 centimeters. the above. To apply organic fertilizer as base fertilizer, apply 4000 kg of decomposed fine-grained high-quality organic fertilizer or 3,000 kg of bio-organic fertilizer per acre, two-thirds of which are evenly laid before the cultivated land, and one-third of it is applied near the root of the crop. It is necessary to finely level the ground, to achieve the leveling, flattening, and straightness without sloping; to perform low-temperature “smelting†on the seedlings 5 ​​to 7 days before planting to enhance the adaptability of the seedlings to the post-planting environment; The depth is the same, in which tomato and eggplant should be deeply planted, covering more than 2 to 3 cm above the nursery; cucumber, pumpkin, melon and other melon crops should be planted shallowly, covering soil and nursery. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Safety Box,Home Safe,Large Safe Box,Exclusive Safes Hebei Yingbo Safe Boxes Co.,Ltd , https://www.ybsafebox.com