The invention discloses a water and
fertilizer integration technology mode suitable for north tea gardens, and belongs to the technical field of
tea tree cultivation. The mode includes construction of a
fertilizer formulation
pool, an installation method of a venturi and a water meter, main
water pipe laying,
branch pipe micro-spraying tape placement, high-pressure water spraying and low-pressure fertilization technical measures and the like. The mode is characterized by comprising the steps: dissolving a
water soluble fertilizer in the fertilizer formulation
pool, and placing a micro-spraying tape between two rows of tea trees; through controlling a switch of the venturi, carrying out
spray irrigation water application in the high
water pressure and the high flow quantity, and carrying out
drip irrigation fertilization in the low
water pressure and the low flow quantity; after fertilization is completed, carrying out
spray irrigation again; and changing a fertilization mode of 'one-time base fertilizer application and three-time top application' into a mode of 'one-time base fertilizer application and six-time top application'. Compared with the prior art,
spray irrigation is carried out in the high
water pressure and the high flow quantity, so that requirements of
tea garden irrigation are met, and a
tea garden '
microclimate' is regulated and controlled;
drip irrigation of the
water soluble fertilizer is carried out in the low water pressure and the low flow quantity, so that the fertilizer is allowed to be farthest distributed around
tea tree rhizospheres, and fertilizer absorption of the tea trees is facilitated; and at the same time, a past
tea garden three-time top application is changed into multi-time top application, continuous fertilizer requirements of the tea trees are met, and the purpose of saving water and the fertilizer is achieved.