The invention discloses a method for fruit
cracking control for Lingwu long jujube, which includes: selecting a
yard, cultivating Lingwu long jujube, regulating
greenhouse covering time, regulating tree crowns and fruits and flowers, regulating temperature and
humidity, regulating
nutrition, controlling pests and diseases and the like. The base of a
trunk of a Lingwu long jujube tree in a full bearing period is girdled at a position 10-15cm away from the soil,
girdling width is no larger than one tenth of the
diameter of the
trunk, and
gibberellin 15-20mg / L is sprayed once to twice during the full-blossom period at an interval of 7-10 days. Nutrients are sprayed to enhance thickness and
hardness of fruit peel before flowering of the Lingwu long jujube tree and in the medium and
late stage of
fruit development. By means of the method, application of advancing maturity to controlling fruit
cracking in
protected cultivation of Lingwu long jujube is successfully and technically broken through in Jinghai county of Tianjin, the technical problem of fruit
cracking which bothers jujube growers for long is solved effectively, yield and quality of fresh jujube are improved, insecticide spraying frequency is reduced,
insecticide residue is decreased, the safe and nutritious
health food is provided for consumers, a new way of increasing income for jujube farmers is exploited, and remarkable economic benefit and social benefit are achieved.