At present, it is the critical period for the spring vegetable production in greenhouses. The early spring sunshine greenhouse vegetable is in the key period of flowering and fruit setting. Although the temperature after planting is high, but the fog and haze days, lack of light, is not conducive to flower bud differentiation and flowering and fruit setting. As the saying goes, "One year's plan is spring." In accordance with the principles of creating suitable crop growth environments, growing strong plants, yielding safe and high commodity rates, we propose the following technical measures: 1. Strengthen environmental control and promote robust growth. Fruits and vegetables are currently in the period of rapid growth and high efficiency, and they must adjust the suitable environment for growth. Temperature: suitable temperature of thermophilic crops such as tomato and cucumber is 23°C-30°C during the day and 15°C-18°C at night; air humidity: suitable air humidity of cucumber and pepper is 60%-90%; suitable air humidity for tomato and eggplant It is 45%-60%. Through timely watering, film covering, drip irrigation, or under-membrane irrigation, timely ventilation and dehumidification, etc., the indoor temperature and humidity and the gas environment can be adjusted to ensure the normal growth of crops and prevent the epidemic of diseases and insect pests. Illumination: Always scrub the shed film to increase the light transmittance of the film to increase photosynthesis intensity. 2. Adjust plants in time to optimize community structure. It is necessary to hang vines, vines, and vines as soon as possible, and timely adjust the plants. To remove the old, sick, yellow leaves and collaterals in the lower part of the plant, remove the malformed fruit and oversized or undersized fruits early, so that the plant is in a balanced state of vegetative growth and reproductive growth; , Each plant leaves 4-6 panicles and leaves about 4 fruits per panicle, which enhances ventilation and light transmission and reduces nutrient consumption. Cucumbers also remove tendrils at the time of binding vines, remove male flowers, and appropriately remove lateral vines according to species to concentrate nutrients. It grows well and promotes fruiting. 3. Strengthen flower protection and promote safety. Tomato vigorously promotes pollination-pollinator-assisted pollination, which not only saves labor, but also reduces labor intensity. What's more important is that natural pollination fruit has good taste and also guarantees product safety. Eggplant should timely use "High Yield Agent No. 2", "Fructus Ning" and other safe and efficient protection of fruit spray flowers or flowers, to improve the fruit setting rate; cucumber as long as the growth environment is suitable to fully natural fruiting, prohibit the use of "shun "Spirulina" and other hormones to decorate flowers; pumpkin, summer squash using artificial pollination method. 4. Scientific watering and fertilization, coordination of fruit and fruit balance. After the solar greenhouse vegetables enter the harvest period, fertilizer and water management must be strengthened. Scientific watering and topdressing should be carried out timely according to the weather, crop conditions, and soil conditions. Soil testing, formula fertilization and drip irrigation, submerged irrigation and water saving techniques under the membrane should be actively promoted, and fertilization should be to “eat fewer meals and more meals†and avoid “excessive nitrogen fertilizer. Potash deficiency is the principle; watering is mainly based on "poor water pouring." The fruit of the first ear of the tomato grows to 3 cm in size. The fruit of the second ear sits and starts to top-dressing and watering. The cucumber, eggplant, and pepper are top-dressed and watered when the young fruit begins to inflate quickly, so that the plants are prevented from becoming long due to watering prematurely. In order to ensure the proportion of the growth of pods coordinated, promote fruit enlargement, the fruit rate is high. In addition, carbon dioxide fertilizer is applied during the fruit expansion period, and 20 bags of suspended gas fertilizer are suspended per mu. The leaves were sprayed once every 7-10 days, and 0.5% urea and 0.3% potassium dihydrogen phosphate were mixed and sprayed on the back of leaves to provide quick nutrition supplement. Transparent Blister Boxl,transparent blister box cover,transparent blister box box,transparent blister box design taicang hexiang packaging material co.,ltd , https://www.medpackhexiang.com