Method for quickly improving outplanting rate of culture of kiwi fruit seedlings

Abstract

The invention discloses a method for quickly improving the outplanting rate of culture of kiwi fruit seedlings. The method has the technical characteristics that seeds of delicious kiwi fruits (i.e. the hairy variety) are adopted. The method comprises the steps of: sterilizing soil of a seedbed five to seven days before sowing, and soaking the seeds in water with the temperature of 50-60 DEG C for two to three hours before sowing; sowing in the middle ten days and the last ten days of January, transplanting at the appropriate time of the last ten days of March and the first ten days of April when young seedlings have four to five leaves, extirpating one to two knots at the tips of rootstocks in the first ten days of June, removing coppice shoots 5-10cm at the base parts of seedling trunks in time to guarantee smoothness of the parts of the seedlings to be grafted, grafting single-bud branches at the venter of the rootstocks in the first ten days and the middle ten days of June to the first ten days and the middle ten days of July, breaking the rootstocks off in the last ten days of July and the middle ten days of August, reserving four to five knots above engrafting buds, and breaking off the rootstocks with only barks remained; shearing the rootstocks in the first ten days of September, reserving 4-5cm stumps during stock shearing, removing buds of the rootstocks in time after stock shearing, removing the buds and shearing the coppice shoots as soon as the buds and coppice shoots are come out, and promoting the grafting buds to grow vigorously in combination with the supply of fertilizers and water; and making the kiwi fruit seedlings reach the standard of outplanting at the end of the same year, wherein the rate of outplanting in the same year reaches 80 percent to 90 percent.

Description

Technical field: [0001] The invention relates to the field of kiwifruit production, in particular to a method for rapidly improving the emergence rate of kiwifruit seedlings. Background technique: [0002] Because the seeds of kiwifruit are very small, it is very difficult to raise seedlings. The traditional method requires seeds to be stored in sand, and the seedlings should be shaded when transplanting, and the seedlings can only be transplanted in May to June, and the survival rate is low. Generally, rootstock seedlings are cultivated in the first year. In the spring of the second year, it will be grafted in 2 to 3 years, and it will emerge from the nursery at the end of the second year, usually in 2 years. [0003] Our Institute has invented a method of rapidly raising seedlings, mainly: through "three early" (early sowing, early transplanting, early grafting), to achieve "three when" (transplanting in the same year, grafting in the same year, and out of the nursery in t...

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