Why is water control and maintenance important during the grape flowering period? Key points for fertilization during grape flowering.

Why not water grapes during the flowering periodIn grape cultivation management, the care during the flowering period directly affects the fruit setting rate and fruit quality. Growers need to accurately grasp the timing of water control and nutrient supply. This article will delve into the scientific management methods during the grape flowering period.Grape flowering period water control mechanismScientific basis for water control careGrape inflorescence development is extremely sensitive to soil moisture, with an ideal value of around 50%. At this time, root activity is positively correlated with soil temperature, with a 12%-15% decrease in root absorption efficiency for every 1°C decrease in soil temperature. Heavy watering can cause a sudden drop in ground temperature, destroying the microenvironment required for pollen tube elongation, which directly affects the success rate of fertilization.Precision补水 implementation planWhen soil moisture detection is below 45%, local补水 should be performed using a drip irrigation system. It is recommended to carry out micro-irrigation in the early morning, with a single补水 volume controlled at 5-7L/plant, restoring the moisture content of the 20cm tillage layer to 50%-55%. Using mulch covering can reduce water evaporation and maintain a stable root environment.Grape spike nutrition enhancement planKey element ratio technologySeven days before flowering, spray a mixture of 0.2% boric acid + 0.1% zinc sulfate solution on the leaves, which can increase pollen vitality by 38%. Apply high-phosphorus water-soluble fertilizer (N-P-K=10-40-10) to the roots, with an amount controlled at 3-5kg per mu, promoting complete development of the flower organs.Post-flowering top dressing management pointsImmediately after flowering, supplement calcium and magnesium elements, using a chelated calcium fertilizer (12% CaO) 200 times solution for spraying, combined with potassium nitrate (13-0-46) root dressing, which can effectively prevent fruit drop and promote cell division in young fruits.Microenvironment comprehensive control strategyTemperature and humidity协同 managementMaintain a photosynthesis optimal temperature of 28±2°C during the day and a temperature difference of 16-18°C at night. For greenhouse grapes, open the top ventilation from 10:00-14:00 to maintain 55%-65% air humidity and prevent gray mold disease.Optimization of light intensityAdjust the leaf canopy light transmission rate through new shoot binding to ensure that the light intensity in the inflorescence area is ≥15000Lux. Promptly remove the first three old leaves at the base to improve the ventilation and light conditions around the inflorescence.Scientific flowering period management can increase the grape fruit setting rate to over 75%. Growers need to establish a dynamic monitoring system, using smart devices such as soil moisture sensors and temperature and humidity recorders, to achieve precision field management. It is recommended to use a water and fertilizer integration system to keep the nutrient supply error within ±5%.