It is important to trim kiwi trees in summer

Xiangxi Autonomous Prefecture is the main producing area of ​​kiwifruit in our province, among which the counties (cities) such as Phoenix, Yongshun, Huadu, Jishou and Sangzhi have a relatively large area of ​​development. At present, it has entered the summer to remind farmers in the producing areas that the summer trimming of kiwifruit is very important.

Summer pruning, also known as pruning in the growing season, takes place from the bud to the new shoot and stops growing, mainly in April-August. Through pruning in summer, it can timely control the growth of new shoots, clear over dense branches, improve air and light conditions in orchards, save nutrients, promote thickening of branches, increase yield and quality, and reduce the amount of winter pruning. The main measures are:

Stubble, in addition to Meng. In the bud stage, the two buds are wiped out and the improper buds are removed to remove the sprouting of the base and prevent the consumption of nutrients.

Take heart. Mainly for the Wang long new tips topping, should be carried out before and after flowering. The long-term result branches and long fruit branches often leave 7-8 leaves from the flowering site to pick the heart. The development branch leaves 13 to 15 leaves to pick up the heart. The reserved shoots are reserved for the preparation branches, leaving 4 to 6 leaves topping, which can promote hair growth. Sub-branches, and leaves 7-8 leaves for the second branch. The secondary shoots sprouted at the tips of the new shoots generally leave only one, and after 2 to 3 leaves appear, they are picked again and repeated to control their growth and promote shoots and fruit development.

The kiwifruit male plants only flowered without result. After the flowering period, the nutrients were mainly for new shoot growth and flower bud differentiation. The new shoots grew well and thrivingly. Each time shoots were able to form flower buds, so the summer was mainly a repeated picking of the new shoots. Enrich, cultivate to become the flowering mother branch of the leap year, and control the size of the crown so that it does not interfere with the growth of the neighboring female plant.

Cut the tip. For the new shoots that have been missed by the picking center, they must be trimmed after fruiting. The curled and wound parts of the tip of the new shoot are all cut off. The result of the branch nearer to the ground may be cut short by 50 cm from the ground when the leaf is heavy and drooping. The kiwifruit also has a phenomenon of injuring the flow during the growth period. In the summer, shearing wounds should be cut as much as possible, and the measures of wiping off buds and topping should be advocated.

Thinning. For the long shoots that have been missed by the buds, they should be thinned after fruiting. Dense and upright Wang shoots, cross-border shoots, poorly growing nutritional competition shoots, injured shoots, diseased shoots, etc. should be removed.

Hormone control tip. It sprays medicine mainly when the shoot length is about 30 centimeters. After June, it mainly sprays the growth-strong varieties and inhibits growth. The agents used were 2000-3000 ml/l B9 paclobutrazol; 500 mg/l ethephon + 2000 mg/l B9. These agents have a good inhibitory effect and can promote germination and differentiation. After treatment with growth inhibitors, the total shoot weight of Kiwifruit increased significantly, the proportion of shoots and long shoots decreased, and the ratio of short shoots to short shoots increased. However, it should be noted that whether it is applied alone or in combination with ethephon, it has the effect of promoting the shedding of young fruit, and it can also make the fruit shape flatten and the fruit become significantly smaller.

After summer pruning, the new shoots should be tied in time so that all spaces in the rack have new shoots evenly distributed. At the same time, it is necessary to maintain the forward extension of the extension branches and adjust the growth potential. The new shoots of kiwifruit are crisp and easy to be broken by wind and rain. Attention must be paid to timely tying up the vines so as to preserve the fruits and preserve the fruits.


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