Amorpha fruticosa is drought-tolerant, but watering management should be strengthened in nursery management and early garden planting. Adequate water can not only improve the survival rate of seedlings, but also make seedlings grow vigorously. Before emergence after sowing, if the seedbed soil is dry, it should be watered in time. Water the seedlings in time after thinning to prevent the roots from drying. Bed soil is not easy to be too wet, so as not to cause excessive growth or disease. In the early stage of seedling growth, the aboveground parts and roots of seedlings begin to grow and form roots, but the distribution is shallow, such as insufficient water in bed soil, which is easy to cause seedling death. At this time, it is necessary to keep the surface bed soil moist frequently and increase the watering amount appropriately, so that the watering times can be reduced accordingly. From the fast-growing period to the end of the fast-growing period, the seedlings grow fast, need more water, water fewer times, and water more times, which completely meets the water needed for the rapid growth of seedlings. In the late stage of seedling growth, in order to prevent seedlings from growing white and make seedlings fully lignified, watering should be controlled. During the abundant precipitation period in summer, the accumulated water should be discharged in time after the rainstorm. Amorpha fruticosa is resistant to water and humidity, but it doesn't like water and humidity. Long-term water accumulation can not cause its death, but it can still affect its growth. Therefore, timely drainage after heavy rain is a measure conducive to seedling growth. For the finished seedlings planted in the garden, the first water should be watered immediately after planting, the second water should be watered five days later, and the third water should be watered again on 10 day. After that, you can water it 1 time every month, and reduce the amount of water in summer rainy days. Both nursery seedlings and garden seedlings should be fully watered in late autumn, thoroughly watered with frozen water, and thawed water should be poured 1 time in early spring of the following year.
Amorpha fruticosa is barren-tolerant, but sufficient fertilizer can make it grow vigorously. In the early stage of transplanting, the decomposed and fermented ring fertilizer should be used as the base fertilizer, and the application amount per mu should be 3000 kg, and the fertilizer should be evenly mixed with the planting soil. In spring sowing, ternary compound fertilizer 1 times can be applied in mid-July, and farmyard manure 1 times can be applied in late autumn combined with frozen water.
breed
The propagation of Amorpha fruticosa can be carried out by sowing, cutting and dividing plants. Sowing method is simple to operate and can obtain a large number of seedlings at one time, which is the most commonly used method.
September ~ 10, picking fruits on sunny days. After collection, put the pods in a sunny place to dry, and after 1 week, remove impurities by air separation, then put them into clean cloth bags and store them in a ventilated and cool place. Seeds should be soaked before sowing to promote seed germination.
The seedbed should be set in a flat and fertile place, with neutral sandy loam as the best. The seedbed should use decomposed fermented cattle and horse manure as base fertilizer, and the dosage is 2000 kg per mu. Before sowing, level the soil and water it 1 time. It is advisable to sow from the end of March to the beginning of April. The sowing ditch is about 5 cm deep and the row spacing is 20 cm. After sowing, cover the soil in time. The thickness is 2 cm, and the sowing amount per mu is 3 kg. After sowing, seedlings can emerge about 1 week. After the seedlings come out together for half a month, they can be thinned, leaving 5 ~ 6 seedlings per square meter. Attention should be paid to weeding and watering at seedling stage to prevent the harm of underground pests. Because Amorpha fruticosa has a well-developed root system and grows rapidly, one seedling can be sold in one year, so transplanting and planting are basically not carried out in nursery management. The survival rate of bare roots is high when the seedlings are sold.
Trimming integer
Pruning Amorpha fruticosa is relatively simple, generally cultivated in the nursery for one year, sold out of the nursery, and pruning work is not much. Proper pruning should be carried out when it is used for landscaping. If the seedlings are not neat when planting, the hedgerow seedlings can be trimmed with a brush cutter after planting to make the hedgerow plane flat. If it is used for highway slope protection planting, it is best to level the stubble when planting, so that the survival rate of seedlings is high, branches are easy to grow, and the slope protection effect and ornamental effect are also good. In landscaping, pruning is carried out according to the purpose. If you dress up a rockery, don't let it grow too high and often cut it short. When used in sheet planting, attention should be paid to thinning branches to facilitate ventilation and light transmission.
Eliminate pests and diseases
The pests that harm Amorpha fruticosa are scarab, elm, locust, jujube and autumn inchworm, green radish and kidney bean radish. If scarabs occur, adults can be trapped and killed by light, and larvae can be killed by 40% methyl phoxim for 200 times. If elm and Robinia pseudoacacia occur, 3 ~ 5 Baume lime-sulfur mixture can be sprayed in early winter to kill overwintering eggs. At the early stage of nymph and adult, 2000 times of 10% imidacloprid wettable powder or 0/000 times of 1.2% Kuyan EC/kloc-0 can be sprayed on the back of leaves. If scale insects are harmful to jujube trees and autumn, they can be killed by spraying 15% imidacloprid microcapsule dry suspension 2000 times or 95% mirex emulsion 400 times in the initial incubation period. If the seeds of green beans and green beans are damaged, the adults can be killed manually, and 25% hypertonic phenoxy wet powder can be sprayed 300 times in the adult stage in the serious occurrence area to kill them.
Amorpha fruticosa has strong disease resistance, and no obvious diseases have been found in cultivation.