There are many breeding methods for barn pears. Because of the low breeding coefficient of the bead and the time required for the grafting, the cultivation of the stem tip in vitro has high requirements for equipment and craftsmanship, and it is difficult to popularize and apply. At present, there are mainly real fruits and cuttings.
First, the real breeding of the Robinia pseudoacacia is strong in self-pollination, and the seed is easily available. This method, however, is concise and easy to breed seedlings. 1. Seeds and seeds are stored about 120 days after flowering. Embryos have been fully grown and ready for harvesting. Cili pear seeds do not have a dormant period and are extremely resistant to drought. They must be seeded immediately after the autumn sowing. If they cannot be planted in real time, they should be stored moisturized and should not be allowed to dry. Otherwise, their ability to germinate will be seriously damaged. 2. The choice of nursery land is that of pear, wet and fertile soil, and nursery land should be selected for deep squatters, where the water-retaining fertilizers are strong and can be easily drained, so as to ensure that the seedlings grow vigorously and have more branches, which is conducive to early fruitfulness. 3, seeding and seedling transplanting Rosacea intolerance transplant, it should be carried out in the seedling stage. When it is convenient to transplant seedlings, it is required that the soil sown must be loose and the seeds sowed. When there is 4 to 5 true leaves after the seedlings are transplanted, it is the most suitable period and it is easier to survive. 4. The seedlings will be treated with fertilizing water during the spring and summer seasons. The development of spring shoots and summer shoots will be sufficient. Autumn will be used to control fertilizers and water so that shoots can be controlled and developed in real time.
Second, cuttings breeding branches of roxburghii or root insertion root easily rooting, system scouring, fast seedlings, early efficacy, and can link the fine traits of the mother tree, is the main breeding system for breeding seedlings. 1, green branches cut the most appropriate autumn. In September-October, we chose to develop vigorous and robust old branches and cut 15 centimeters of cuttings. The rooting rate can be increased by treating the solution with NAA in a 5 to 15 PPM solution before insertion. 2. It is advisable to use hardwood cuttings in summer and autumn. The one-and-three-year-old shoots selected for development and vigorous growth were used as cuttings, and they must also be treated with developmental hormone immersion prior to insertion. 3, root can be inserted in the spring, summer and autumn can be carried out three seasons, should choose crude 0.5 a 1.2cm, about 15cm at the mercy of the root section as cuttings. Prickly pears are hi, wet, light, and less tolerant. In order to cultivate healthy cuttings, early effects and early harvest should be achieved.
Concentrate Fish Oil,Lemon Flavor Fish Oil,Natural Lemon Fish Oil,Softgel With Fish Gelatin
Weihai Baihe Biology Technological Co., Ltd. , https://www.biohighnutraceutical.com