Kiwi spring management skills!

Spring is the key period of kiwifruit management, good kiwifruit spring management can lay a good foundation for the management of the whole year.So, how should spring kiwi management proceed?

First, prevent early spring frost damage

In the past two years, the kiwifruit producing areas in shaanxi province suffered from frequent spring frost injury, which caused heavy losses to fruit farmers.Early spring to pay more attention to weather changes, to do a good job in time to prevent.

Main measures: orchard irrigation before spring cold, fumigation, placement of smoke generator, spraying potassium dihydrogen phosphate on the tree body (nutrilite phosphorus and potassium), seaweed extract (kuaibao), etc.If the freezing injury has occurred, hold on to the leaf surface and spray kuaibao seaweed fertilizer within 12 hours after the occurrence of freezing injury to alleviate.

Second, tendril

Binding vine mainly begins at the beginning of the injury flow period after the branch softening to bud before.

Specific method: select the main vine, along the central wire binding.Then, after 3 or 4 buds were cut, the branches were daubed with the buds to promote the germination of the upper winter buds.Pull the remaining branches and tendrils evenly to the frame surface, and even them vertically with the main tendrils.Once the buds are present, remove all buds that have sprouted new shoots on the main vine.Weak tip top growth point daub draw branch treasure, promote flourishing branch.Other branches and tendrils bear fruit before thinning or retraction.Before flowering in April, pull the drooping fruit-bearing branches forward to the wire in time.

Iii. Disease prevention and control

canker

Topical application: before the flow-injury period, apply the medicine to the main stem (including all branches and tendril such as grafting mouth), main tendril, all bifurcation mouths, and the base of the resultant parent branch for 15cm, and choose thiamethoxone plaster, copper sulfate plaster, medium mycetin plaster, etc.

Prevention and treatment before germination: serious garden, about 20 days before germination 1 spray sulfur mixture;Organic copper products can be sprayed 7 to 10 days before germination for the prevention and treatment of mild cases.

Remove the diseased twigs: from the injury and flow period, carefully inspect the whole garden every 4 to 6 days, and cut off the twigs under the spot with 20cm under the spot.Thick branches should be scraped to remove bacteria, pus and diseased skin, and then taken out of the orchard and burned.

Root rot

Kiwifruit is a shallow root crops, the ability to retain water and fertilizer is relatively weak, the tree is prone to premature aging, so we need to do a good job in root care.In the garden with root rot disease, the root system can be removed from the end of February or early march and distributed with a layer of soil. If the root is not exposed, the root can be irrigate with oxemilin or copper preparation. After irrigating, the straw can be covered and the soil can not be covered.

Four, seed fertilizer

Germination fertilizer can promote axillary bud germination and branch and leaf growth.

Fertilizer selection: 32-6-12+TE produced by Shanghai yongtong or 20-20-20+TE to be used for drip irrigation to promote root growth in axillary bud germination.

Fertilization time: the first bud at the top of the main branch bloomed, the second bud began to expand, or the germination rate of the whole tree reached 10% was the best.

Spring pruning

Heart pick: hayward, garden, China superior varieties, now bud, timely on the strong prosperous fruit branch in the most bud before, leave mature leaves to pick heart, in order to prevent wind break branch loss yield.Pick heart can be carried out in batches, first pick strong prosperous back branch, then pick long prosperous other branches.

Rescissor: cut off the overgrown branch outside the second iron wire.

Sprouting: after germination, except for the red sun and green incense varieties, other varieties can be sprouted to eliminate the weak bud tips on the parent branch, the bud tips damaged by diseases and insects, and the lower bud tips on the back, so as to reduce invalid consumption.

Buds: all lateral buds are removed before flowering.Red Yang bearing on mother branch, every other fruiting branch, sparing all buds on another fruiting branch.