Irrigation of jasmine

Jasmine likes to be moist and is afraid of drought and waterlogging. Drought often makes jasmine leaves curl, leaf color fade, chlorophyll is destroyed, synthase activity decreases, decomposing enzyme activity increases, not only can not synthesize nutrients needed in the process of cell division, on the contrary, proteins in the body are hydrolyzed into amides and amino acids, causing plant metabolism disorder. The water content of jasmine buds and shoots is more than 80%. Water shortage and water loss will inhibit or even destroy the normal physiological and biochemical processes of the plant. In severe drought, the growth and development of jasmine plant is slow, the mature period of flower bud is prolonged, the flower bud is small and difficult to pick, and it also affects the germination and growth of new shoots. In order to obtain high-yield and high-quality jasmine, efforts should be made to do a good job of irrigation in the process of cultivation. Irrigation should be carried out in time in case of drought, and flooding irrigation should not be carried out to avoid soil consolidation. Furrow irrigation should be adopted to block the water inlet when the water level reaches 2/3, so that the soil can absorb water naturally. When there are conditions, it is best to establish sprinkler irrigation or drip irrigation system, so that irrigation can be carried out in time. Try to make the soil water content of the garden reach about 70-80% of the maximum water-holding capacity.

Because jasmine is a dryland crop, aeration tissue is underdeveloped, so jasmine is more avoid waterlogging. Long-term waterlogging of soil makes the root system of the plant grow slowly, even rot, affect the absorption of fertilizer and water, and lead to plant death in serious cases. Thousands of mu of jasmine were flooded in Hengxian County, Guangxi in 1994 and 2001. It is observed that when the flooding time is more than 8 to 10 days, most of the plants die from the roots; if they are flooded for 4 to 7 days, the aboveground parts basically die, and most of the roots survive, after pruning, loosening the soil, fertilization and other field management processes, generally, about half a month, the new roots begin to shoot, and the branches also begin to germinate. The plants flooded for 2 or 3 days will cause some or most of the fallen leaves, affect the emergence of new branches and the growth and development of buds, resulting in a decrease in yield. In production, drainage ditches should be opened before the arrival of the rainy season, so that the field can be drained in time after rain and prevent stagnant water in the field.