1, drainage treatment
Gracilaria lemaneiformis is drought-tolerant and afraid of waterlogging. If there is water in the soil, it may lead to root rot, which may lead to the branches becoming soft and shriveled. At this time, the accumulated water in the soil should be poured out, and then the drain hole at the bottom of the flowerpot should be dredged to ensure the excess water in the soil to flow out.
Step 2 trim the roots
The soft withered branches of Gracilaria lemaneiformis indicate that its roots can't absorb water and nutrients. At this time, the plant should be taken out of the flowerpot, then the rotting and blackened roots should be cut off, then put into carbendazim solution for disinfection and sterilization, and then put in a ventilated place to dry naturally.
3, soil disinfection
Root rot of Gracilaria lemaneiformis may cause bacteria to remain in the soil, and direct planting may cause infection to healthy roots. At this time, the soil needs to be exposed to the sun 1 to 2 days, or sprayed with disinfectant for sterilization.
4, moisture requirements
Gracilaria lemaneiformis likes wet and is afraid of waterlogging, and the demand for water is different in different seasons. Generally, water every 3 ~ 5 days in the spring and autumn growing season, and water every morning and evening in summer to avoid soil water accumulation, and water every 10 ~ 15 days in winter.
Field management of Aralia elata in Liaodong
1, management in the first three years
Nitrogen, phosphorus and potassium were topdressing according to the ratio of 3: 1: 2. Top dressing is performed three times a year, and heavy fertilizer is applied in March, June, August and March, accounting for 1/2 of the whole year. General 1 year 0.25kg for plants, 0.5kg for the second year and 0/.0 kg for the third year. Fertilization is combined with scarification. Weeding: Paraquat can be sprayed, and plants can be protected with protective covers when they are young.
Pruning: after planting for 8 ~ 12 months, when the plant grows to about 50cm, the terminal bud can be cut off and let it branch (the cut terminal bud can be used as a seedling cutting root). 1 branch is generally suitable for 3 branches; When it grows to about 1 year and the branches protrude about 50cm, you can use the same method to cut the branches for the second time: in the third year, cut the branches in the same way again.
Plant thinning management: in the spring of the second year after planting, each row 1 plant is dug up and planted separately; In the spring of the third year, alternately turn up 1 row and plant separately; In the spring of the fourth year, 1 plant was dug out from each row for planting.
Management after 2.4 years
Nitrogen, phosphorus and potassium were topdressing according to the ratio of 2: 1: 3. Three times a year, in March, June and August. Heavy fertilizer was applied in March, accounting for 1/2 of the whole year. The fertilization rate is per plant 1.5. When fertilizing, combine loosening soil and weeding, and dig an annular ditch every time. After fertilization, the soil is covered. Weeding: spraying paraquat 1 time every year. Plastic pruning: no pruning in the fourth year, and induced pruning with dragon's blood after the fifth year.