First, Xiangling. The tree has moderate potential, upright posture, semicircular crown and strong branching. Male type, medium maturity, fruit branch rate of 85.7%, lateral fruit branch rate of 865,438 0.7%, and average fruit setting per fruit branch of 65,438 0.4. The yield is high at full fruit stage, but the disease resistance is poor. Nuts are oval and weigh12.2g. ..
? The second is Liaohe No.4, with moderate tree potential, upright or half-open posture, round crown and strong branching. Male type 1, late ripening. The lateral mixed bud rate reached 90%, and the average fruit set per fruit branch was 65438 0.5, with high yield. The average yield of 8-year-old plants was 13.8 kg, and the highest was 18 kg, which was not obvious in different years. Nuts are round and weigh12.5g. They are extremely resistant to diseases, cold and drought.
3. Lin Zhong No.5, with moderate tree potential, wider tree shape, stout branches, thick and short branches and oval or round crown. The proportion of lateral mixed buds is 98%, and each female inflorescence has two more female flowers, which is the first female. Nuts are round and weigh 13.3 grams ... The suitable tree shape is natural round head, and the pruning should be moderately short to keep the tree growing.
? Walnut varieties can be divided into early fruiting and late fruiting. Early fruiting varieties bear early fruits and have high yield, but they like water and fertilizer and have high site conditions. Such as Xiangling, Liaohe series, Lin Zhong series, Xifu 1, Xilin 2; Late-maturing varieties bear fruit late, but they are barren and drought-resistant, long-lived and have relatively long bearing years. Such as Jinlong 1 2, Qinhe 1, Qing Xiang, etc. In short, the selection of varieties should be on-the-spot investigation, seeing is believing and adapting to local conditions.