I. Variety selection
The currently popular varieties are Hull and Chester. Hull is free from thorns, semi-upright, hi light, drought-tolerant, and resistant to diseases and insect pests. It is a high-yield product with a maximum yield of 2000 kg. Chester has no Thorn, standing upright, hi light and drought tolerance, resistance to pests and worms is less than Hull, stable product species for high yield.
In recent years, Nanjing Institute of Botany has introduced four new varieties and Ning Zhi 2, Ning Zhi 4, Ning Zhi 7, and Ning Zhi 8. After cultivation observation and comparison, Ning Zhi No. 2 and No. 8 have strong Growth advantage, which is a substitute for performance expansion. Ningshu No.2 has no thorns, good erectness, medium plant type, fruit ripening from early June to early July, medium yield, early-heat variety, Ningzhi No.8, thorny shrub, near-vine-grown plant type, growth potential Strong, high resistance to pests, high yield, up to 2500 kilograms per production, and the fruit quality is sweet, good taste, the most ideal replacement species, there is promotion of planting value.
Second, seedbed preparation
Choose a flat terrain, adequate light, loose soil and fertile, convenient drainage and irrigation of the plot as a seedbed. In the winter, the seedbed is ploughed and frozen and planted. Before the planting, it is required to plant a width of 100-120 cm and a height of 15-20 cm. In addition, an appropriate amount of 2,000 tons of organic fertilizer per acre should be applied during soil preparation. Fine, soft and fat.
Three, branches selection
In combination with the berry garden autumn pruning, the branches of the year's results that were pruned were selected to be thick and robust, and the strong and disease-free branches were each tied into 20 or so small bundles, and were stored with fine wet sand, and the degree of moisture was pinched into balls. It is better to let go. The bundled branches shall be discharged on the sand surface of the bottom layer, and then the branches shall be discharged after the fine sand covers. The thickness of each layer shall be 5 cm or more, the sand height shall be 1 m or so, and the wet sack or straw shall be sealed after pouring the warm sand surface. Lizhi moisturizing, branches stored in the leeward sunny room, ventilation is better to prevent freezing injury.
Four, branches cutting
Generally early spring cuttings as well, the time from the beginning of March to March 20 or so, should not be too late, the cuttings will be removed from the sand when the branches, each cut into 10-15 centimeters with bud cuttings, with ABT rooting The powder or naphthalene acetic acid is used to treat the lower end of the cuttings, and then horizontal grooves are formed at a spacing of 20 centimeters on the seedbed. The depth of the grooves is 5-10 centimeters. The upper end of the cuttings is slanted into the trench by 10 centimeters, and the cuttings are inserted into the groove. Article should not be exposed to the surface of soil, plug in timely watering and covered with straw or mulch.
Fifth, post-insertion management
1. To cover the nursery with mulching film, put the seedlings in the hole immediately after emergence to prevent high temperature burns;
2. Drought prevention and flood control, normal water management, and watering once a week in case of drought to keep the soil moist;
In June and June, nursery stocks should be treated with seedling thinning and seedlings. The spacing between the rows should be kept between 3020. Topsoil should be top-dressed, and thin human feces and urine should be used as well as about 10 kg of urea per mu.
4. Weeding should be based on manual weeding;
5. It is necessary to spray bactericides such as carbendazim in time after emergence. The underground pests should be mainly killed and killed.
Sixth, layering seedlings
Before and after the beginning of autumn, in the berry garden, the branches and branches of the new branches were selected to be buried in the soil to propagate the seedlings. Before the New Year's Day, the pressured seedlings were planted and then transplanted in spring for transplanting.
Seventh, seedling standard
Seedling height above 50 cm, thick stalks, thicker than 2 cm above, plant disease-free without scars without scars, sticks were green and red, root integrity.
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