Attention should be paid to the pollination tree planting configuration: development of walnut planting when the majority of people will ignore the configuration pollination tree problem, one of which is the main reason of the low yield at walnut. Walnut female, male flower bud, blossom time same breed female, male flowers are often inconsistent, the general difference between 6 - 7 days, the most ugly for nearly 10 days, causing the flowering, so walnut flower and fruit drop is very serious. According to observation, some varieties of male flowers open first, some varieties of female flowers open first, such as the planting of more than two varieties in the same park, we can solve for flowering and fruit set problems influence.
Planting hole should be large: Walnut after planting in the garden, to nearly a hundred years of growth, so the hole must be dug long, wide, deep into 1 x 1 x 1 meters, and backfill soil, with the application of organic fertilizer 25 kilograms in the hole the depth of 20 cm soil layer at the bottom. Digging planting hole is very conducive to the growth and development of root system. Cavity with organic fertilizer, can lead to deeper root growth, enhance cold resistance, drought resistance of tree. The current culture of walnut planting hole just dig long, wide, deep into 0.5 x 0.5 x 0.5 meters or by mechanical drive 50 - 60 cm ditch is not desirable, because planting walnut not only for its activities, it is important to let the results, and early results, many results, bear good fruit, long-term results. Especially clay dig small planting hole is a major cause of young walnut retting root, yellow leaves, dead tree. So planting hole rather big not to small, by digging planting hole to achieve the purpose of improving the soil, but also laid the foundation for future fertility.
Choose excellent breed: Walnut results sooner or later, quality, yield traits is the main varieties of decision. The Beijing suburb of historical plant walnut seedling breeding use, generally after the 7 - 8 years after the start of the results. The current agricultural science institute, universities and colleges have bred a batch of excellent varieties, and take the grafting and cultivating seedling, keeps the excellent variety characteristics, but the price is more than 2 - 3 times the seedlings seedlings. Currently on the market there are still selling seedlings shoddy phenomenon, some farmers did not know the truth, after buying 5 - 6 years still no results. So the development of walnut planting must choose the excellent varieties. Suggested the use of forest system in Liao, Jin long, nuclear system department, shell incense, gifts and other excellent better varieties of walnut.
Broken taproots promoting lateral root: walnut seedling taproot and lateral root developed, is very weak, the shape of radish. To promote the growth of lateral roots, taproot must cut off before colonization, and pay attention to the protection of lateral roots, prevent water loss and dry, otherwise it will affect the seedling survival. The best way is to dig out the seedlings transplanting seedlings in time, transport root dipped in mud, before transplanting should root soak in water for 12 - 24 hours, so that plants absorb enough water, the best conditions for root soaking powder in water, it is the effective measures to improve the survival rate of seedlings.