The main management work of ginger in the late growth stage is 1. Water frequently: Ginger likes wet but is not drought-tolerant. Generally, it is advisable to water the soil after shallow hoeing. In case of drought, the watering frequency should be increased, but flooding is not allowed. September is the best period for ginger root growth, and the demand for water is obviously high. It is advisable to water once every 7- 10 day, and water less when there is more rain. The watering time should be in the morning and evening, and try not to water at noon. 2. Balanced fertilization: Because of the long growth period of ginger, a lot of fertilizers are needed, especially in the middle and late stages of ginger, accounting for about 80% of the whole growth period. In the first half of September, when there are 6-8 seedlings, it is a period of rapid expansion of roots, and topdressing can be done as appropriate according to the growth of plants, which is called "topdressing". On the one hand, this topdressing can promote the vigorous growth of stems and leaves, and make the rhizome of ginger expand rapidly; On the other hand, it can prevent premature senescence of stems and leaves and affect the yield due to fertilizer removal in the later growth stage. Generally, 20 kilograms of nitrogen and potassium fertilizer are applied per mu. Combined with topdressing, trace fertilizers such as boron fertilizer and zinc fertilizer should be supplemented in time. Generally, topdressing 2 kg zinc sulfate and borax 1 kg per mu plays a very important role in improving the yield and quality of ginger. For plots without fertilization, spraying potassium dihydrogen phosphate on leaves twice can obviously improve the later yield. 3, multiple times of soil cultivation: Because the growth of ginger roots requires dark environmental conditions, it is necessary to cultivate the soil many times. Generally, the soil should be ploughed for 2-3 times, and the first time should be carried out when topdressing. Farmhouse manure should be covered with soil, not too thick. 15 days later, the second and third ridging will be carried out. Finally, the ridging should be completed, and the roots should not be exposed to the ground. 4. Prevention and control of diseases and pests: Ginger blast is a devastating disease in ginger production, and it is also the main factor affecting ginger yield, so comprehensive control measures should be taken. Crop rotation, digging drainage ditches to prevent waterlogging; Chemical prevention and control can be done with liquid medicines such as Shengshengbao, Jiangwen Powder and Lvba 1, 500-2000 times. When serious diseased plants are found, they should be pulled out in time and marked with lime. After the ginger is harvested, the soil here should be buried deep. The main pests are ginger borer, beet armyworm and ginger thrips. It is necessary to do a good job in pest investigation on a regular basis and do a good job in chemical control before the outbreak of pests. Pyrethroid pesticides and imidacloprid can be sprayed, and/kloc-0 can be controlled every 7- 10 days. 5. Timely harvesting: The suitable harvesting period of ginger is 10 year 1 October 20-25, and the harvesting in southern China can be delayed for 3-5 days, and the harvesting in eastern Hebei can be advanced1week. Picking ginger at this time will not freeze the ginger pieces, but also make full use of the golden period of ginger yield increase in the later period. Therefore, we must grasp the best harvest time and never harvest it too early. In order to facilitate storage and nutrient backflow, we can leave stems about 3 cm long to promote nutrient backflow, and flexibly grasp the selling opportunity according to market conditions. Does ginger need a lot of fertilizer? On the premise of applying sufficient base fertilizer, the principle of topdressing is to apply it as little as possible and in multiple times, that is, the amount of topdressing should be less each time, but the number of topdressing should be more. When nitrogen, phosphorus and potassium are used together, ginger can be topdressed for three times:

1, topdressing seedling fertilizer, usually the first topdressing is carried out when the ginger seedling is about 30 cm high and has 1-2 branches. Top dressing is mainly nitrogen fertilizer, and 20 kilograms of ammonium sulfate or diammonium phosphate can be applied per mu; If the sowing date is too early and the seedling stage is long, fertilization can be carried out 2-3 times with watering, and the fertilization amount is the same as above. 2. Generally speaking, beginning of autumn is the turning point of ginger growth and nutrient absorption. After this period, plants grow faster, accumulate a lot of nutrients to form product organs, and increase the demand for fertilizer and water. Combined with weeding in ginger field, the second topdressing was carried out before and after beginning of autumn. When topdressing, cake fertilizer or farm manure is used in combination with quick-acting chemical fertilizer. Usually, 70 kilograms of cake fertilizer, 65,438+0,000 kilograms of decomposed chicken manure, 50-60 kilograms of compound fertilizer or 20 kilograms of urea, 30 kilograms of diammonium phosphate and 50 kilograms of potassium sulfate are used per mu. The method is as follows: open a fertilization ditch on one side of the ginger seedling at a distance of 15cm from the plant base, sprinkle the fertilizer into the ditch to mix with the soil, then cover the ditch with soil, seal the soil, and finally pour water.