Drainage and irrigation management of Ginkgo biloba

Ginkgo trees have strict requirements for water, and they are wet, but they are afraid of ponding. The seedlings will die after soaking in water for 3-4 days. In the production process, attention must be paid to drainage and timely watering. First, the principle of irrigation Ginkgo biloba growth and development stages need to have sufficient water. Irrigation depends on conditions such as tree body, precipitation and soil moisture content. Specifically, we should do a good job of irrigation in the following periods: before germination, at the end of dormancy, before bud germination, that is, usually called "spring irrigation"; after flowering, fruit expansion, rapid growth of new shoots, higher requirements for water, more can be continuously irrigated twice; fruit development, at this time in the rainy season, generally do not need irrigation, but in dry years still need irrigation. Before overwintering, after fruit harvest, leaves turn yellow and fall off, irrigation before soil freezing, promote flower bud differentiation, enhance tree cold overwintering ability. Second, drainage Ginkgo fear of waterlogging, root system in the water 15 cm deep, for 10 consecutive days, will cause deciduous and rotten roots, heavy plant death. When selecting a garden, attention should be paid to the section where the groundwater level is 1-2 meters. When planning the garden, the drainage system should be designed, that is, deep trenches should be opened around the garden, and a drainage ditch should be opened every two rows in the garden. Open trenches and underground trenches can be used. Hillside drainage can be drained along the ditch in combination with horizontal steps, fish scale pits and terraces. When the water content of the root distribution layer reaches the maximum water holding capacity of the soil, drainage is required.