Lupine has beautiful leaf shape, large inflorescence, many and dense florets and rich colors. Potted plants are often made to decorate small courtyards, halls and steps, which is very attractive. At the same time, Lupin is also a good material for natural garden and flower border. Today, let's learn the cultivation method of lupin to make our home beautiful~
Lupinus Lupinus with rich flowers and colors: it likes to be cool, sunny, hot and slightly shade tolerant. Deep rooted with few nodules. It requires deep soil layer, fertile and loose, good drainage, acid sandy soil (pH 5.5), neutral and slightly alkaline soil, and poor plant growth. Breeding methods of lupin: in the production of lupin, most of them are sown in spring and autumn, and sown in March. However, the postnatal period of spring sowing is in summer. Affected by high temperature and heat, some varieties will not blossom or the proportion of flowering plants is low, the flower spike is short, and the ornamental effect is poor. Under natural conditions, sowing in autumn is earlier and stronger than sowing in spring, sowing from September to the middle of October and flowering from April to June next year. 72 or 128 hole hole tray on demand, covering. The seedling soil should be loose and even, breathable and water retaining, and the special seedling soil or peat soil and perlite should be mixed. The seeds are large, common or coated, about 40 seeds / g. The suitable temperature for germination is about 25 ℃ and the medium is moist. The seeds germinate after 7 to 10 days.
Cultivation and management of lupin: the seedling period of Lupin is 30-35 days, and the seedlings are transplanted and divided after the true leaves are fully expanded. The root system of Lupinus Lupinus is well developed, and the original soil should be kept when transplanting, so as to slow down the seedling. Before planting, according to the growth situation, the pots should be changed one or two times. The best choice of pots is high barrel pots, so as to meet the growth needs of taproot roots and determine the reasonable planting density. For autumn planting, the corresponding cold protection measures should be taken when overwintering, and the temperature should be above 5 ℃, so as to avoid the freezing injury of leaves and affect the early vegetative growth and ornamental effect.
Lupine likes to be cool, and it is a perennial plant. Therefore, special attention should be paid in summer to prevent leaf yellowing, plant growth dwarf and even death caused by high temperature and humidity and sunlight. In the garden application of flowering period, it can also be directly planted under the trees in the forest and in the cool and ventilated place, which is convenient for summer management. After potted ornamental, it is necessary to cut off the residual flower ears and withered leaves in time, control fertilizer and water, and do a good job of shading protection in high temperature period, so as to ensure the safety of summer. Regulation of soil pH
According to the growth habit of lupin, it is very important to control and adjust the pH value of cultivation medium for the normal growth and flowering of lupin. In general, the simple and effective method is to apply sulfur powder to the cultivation substrate. Because it takes a certain time for sulfur to decompose in the substrate (about 40 days) to play a regulatory role, the application should be carried out as soon as possible, generally starting when 2 to 3 true leaves appear after transplanting, and the amount of application depends on the original pH value of the cultivation substrate. In addition, although ferrous sulfate, aluminum sulfate and other acid fertilizers have the effect of reducing pH value in a short time, too high concentration of salt ions will cause toxicity to plant roots, so they should be used less in production. Disease control of lupin: the brown to black spot of lupin leaf spot damages the growth of leaves and stems, leading to early withering of leaves. Carbendazim wettable powder can be sprayed with 1500 times of liquid, and the effect is good.
lupin