Hongyang kiwifruit fruit bagging can reduce problems such as sunburn, leaf grinding, prevention of plant diseases and insect pests and fruit surface pollution, improve the appearance quality of fruits, and ensure the safe production of kiwifruit. In order to improve the commercial quality of Hongyang Kiwifruit, fruit bagging management is required during the growth of Hongyang Kiwifruit.
First, prepare before bagging. Sparsely deformed fruit, flat fruit, small fruit, diseases and pests, etc., and retain young fruit with thick fruit stems and well-developed fruit. About 40 fruit per square meter of matured gardens are left. After the young fruit is selected, it is carefully removed and attached. Sundries on young fruit. Orchard irrigation using small water irrigation, generally appropriate irrigation before bagging, so that the soil moisture content maintained at 70% of the maximum water holding capacity in the field. A fungicide should be sprayed before bagging, and the time interval between the bagging and the bagging should not exceed 3 days. It is best to spray it on the same day and use the 80% Dasheng M-45 WP 800 times liquid and other low-toxicity low-residue drugs. Do not use emulsions, which can easily cause plaque on the fruit surface. After the liquid is dry, it can be bagged.
Second, bagging technology.
1, the choice of bag species. Kiwi bagging requires bag with strong shading, good air permeability, low water absorbency, strong tensile strength, and soft papery yellow single-layer wood pulp paper bag, leaving two vent holes at the bottom of the bag or not sealing at the bottom. Specifications 165 mm 115 mm.
Bagging period. Kiwi bagging should start about 30 days after flowering, and use l0-l5 days to complete the set. Bagging should be done in the morning after the dew is dry, or after the liquid medicine is dry. The sunny days are usually 9:00-l1:30 am and 4:00-6:30 pm, and should not be immediately bagged after the rain. Bagging is too early, which can easily harm the fruit peel and is not conducive to the development of young fruit. When the bagging is too late and the fruit surface is rough, the bagging effect is affected, and the lignification of the fruit handle is not easy to operate.
2, bagging method. The night before bagging, the paper bag should be placed in a wet place to soften the bag so that the bag can be tightly closed. The specific operation steps are as follows: 1 Hold the paper bag with your left hand and open the bag mouth with your right hand so that the bag body will bulge and make the vent hole for the two corners of the bag open. The mouth of the bag is upwards, and the mouth of the bag is 2-3 cm below the mouth. Put the young fruit in the person's bag so that the handle sticks to the base of the bag opening; 3 fold the left and right sides of the bag to the middle and fold it horizontally. After stacking the bags, bend the bag mouth into “V†shape. Bag mouth, complete bagging. Set the time to pay attention to the strength should be appropriate, the direction must always be upward, to avoid the zhasuo wrapped around the handle, to tie the bag mouth. The purpose of this operation is to put the young fruit in the center of the bag body and hang it in the bag to prevent the bag body from rubbing the fruit surface and to prevent the leakage of rainwater, the invasion of pathogens, and the falling of the fruit bag by the wind. After bagging, it encounters high temperature (temperature higher than 38°C). It should open the bottom of the bag to ventilate to reduce the temperature inside the bag.
Third, after bagging management
1, often check the bag. Regularly check the growth of bagged fruit, investigate the fruit growth and pests and diseases, and take corresponding measures in time to find that the broken bag is replaced in time.
2, timely irrigation. The long-term drought in the weather, the temperature in the fruit bag is too high, and it is easy to cause sunburn. It is necessary to balance and timely watering. Pay attention to drainage during the rainy season to prevent rooting.
3, timely bags. Remove fruit bags 7 days before harvest to increase fruit surface coloration. In the event of rainy weather, it is possible to postpone bag removal and postpone harvesting so as to avoid contamination of the fruit surface caused by rain.
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