Second, local conditions Walnut trees do not require strict environmental conditions for growth, but only under the appropriate environmental conditions, their potential can be brought into play, and yield, quality, and benefits will be optimized. The average annual sunshine hours of walnuts is about 2000 hours. The average annual temperature is 9°C to 16°C, the extreme minimum temperature is -25°C, and the frost-free period is 180 days or more. It is advisable to cultivate areas with irrigation conditions.
Third, the results of traits generally in the thin soil, fertilizer and water conditions are poor, should develop late real walnuts; in the deep soil, fertilizer and water conditions are better in the area should adopt early varieties. In addition, the use of dense planting methods can achieve early results and early results.
The fourth is the economic characteristics of the fruit economic characteristics of walnut fruit directly determine the fruit of the commodity, different walnut varieties of fruit size, thickness of the shell, take the ease of the kernel, the taste of the sweetness of the astringent, the nut oil rate of the high and low differences Before developing walnuts, it is necessary to have a comprehensive understanding of the economic traits of the main cultivars.
Fifthly, the varieties with different stress tolerance are different in their ability to adapt to adverse environmental conditions, such as: Liao Nuclear No. 1, Liao Nuclear No. 7, Qingxiang, Shimen Walnut, Wenzhou 185, Qiangtele, Xiangling, Luguang, etc. Strong cold resistance; Extensive management of Gift No.1, Jinlong No.1, Jinlong No.2, Mianhua Walnut, etc.; Strong anti-disease properties such as Qingxiang, Richie, Xiangling, Fenghui, Shannu No.1, and Gift No.2 Depending on the specific conditions, the above-mentioned species should be selected so that it is easy to obtain high yields and benefit the improvement of the benefits.
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