Cultivation method for increasing walnut yield

The invention discloses a cultivation method for increasing walnut yield. The cultivation method comprises the following steps that after harvest of walnuts in autumn of the last year, 3 m of farmyard manure is applied per mu with ploughing in autumn, and pruning is carried out before walnut leaf falling in autumn; before sprouting in spring, the land is irrigated thoroughly once, additional fertilizer is applied on the peripheries of crowns with irrigation, 5-baume-degree lime sulphur is sprayed to tree bodies and the ground, and a garden is cleaned; during the fruit quickly growing period after fruits in the middle ten days of May, 66.7 m of water is used for supplemental irrigation per mu, 1,000-fold 0.3% sophocarpidine and 1,000-fold thiophanate-methyl are sprayed, and bud notching is conducted on other branches except main branches; in the flower bud differentiation critical period in the first ten days of June, pinching and ringing are conducted, and meanwhile, low-concentrate ABA is sprayed; before the