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利用当地核桃(Jaglans sigillata)复选优株和新疆早实核桃(J.ragia)的嫁接苗,进行栽植密度、施肥量、品种(含树种)三因子试验。结果表明,当地晚实核桃嫁接苗第2年便有少数植株开花挂果,第5年全部结果。早实核桃第2年全都结果。3年生部分单株结果300多个、8年生产坚果892.5kg/ha。早期丰产密度以4m×4m为宜;幼树施肥氮,磷比以1:1配适量有机肥为好。采用良种核桃嫁接苗、合理密植和科学管理,都可使核桃早期丰产。
The grafted seedlings of Juglans sigillata and J.ragia were used to carry out the three-factor experiment of planting density, fertilizer amount and varieties (including tree species). The results showed that in the second year of the local late grafted walnut seedlings, a few plants were flowering and fruiting, the fifth year all the results. Early real walnut second year all results. Three-year-old part of the individual results of more than 300, 8 years to produce nuts 892.5kg / ha. Early high yield density of 4m × 4m appropriate; young tree nitrogen, phosphorus than 1: 1 with the amount of organic fertilizer is better. The use of seed grafted walnut seedlings, rational close planting and scientific management, can make early walnut yield.