Problems and countermeasures of kiwifruit bagging
Kiwi fruit bagging is a technique popularized in recent years. Due to lack of experience, there are also many problems. The author received a question from the Association. In order to solve this problem, we investigated the current situation of bagging kiwifruit in Zhouzhi and Meixian and found some Urgent problems to be solved.
Why do you have a fruit drop after bagging?
After investigating several orchards, the fruit was found to have different levels. Fruit was found on the spot and there were crushes at various stalks, indicating that the hand-pulled wire was too tight and the handle was damaged due to injury. Nutrient transport was affected by yin. It was found that Botrytis cinerea invades the fruit stems, resulting in moldiness in the fruit stems.
Solution: When bagging gently bag, do not crush the fruit handle, should wrinkle gather together, to the handle around, not too tight, as long as insects, water can not go on the line. Botrytis cinerea in the flowering period and after flowering in time with 25% of Jin Luxi + 4,000 times the soft water, even prevention can be controlled twice, will not infect the fruit.
Second, the general flavor of bagging is poor, how to solve.
Although bagging increases the appearance of kiwi fruit, the light taste after bagging is a common problem. In general, the sugar content is 1-2 degrees lower than that of non-bagged fruit, because the fruit receives less light, the accumulation of sugar decreases, and the merchant demands early. Mining is not conducive to the accumulation of sugar, fruit flavor will be subdued.
Countermeasures: In the management of scientific fertilization, increase the application of organic fertilizer, should be applied biological bacteria and organic matter, inorganic fertilizer and trace element elements to increase fertilizer to increase the ratio of phosphorus and potassium; flower bud differentiation phase of application of phosphorus and potassium fertilizer, to promote control Potassium supplements potassium, which can accumulate sugar and increase fruit flavor. For example, in the fruit enlargement period, Longfei Dayuan organic and inorganic biological fertilizer plus chelated trace element fertilizer Stykopoop was applied. Spray high-quality foliar Feifeng 481, fruit friends amino acids. Underground can also Shi Rongchang calcium calcium magnesium potassium fertilizer.
2. Before harvesting, water and nitrogen are controlled, water, nitrogen, and more fruits have more water in the cells and less sugar. This practice before harvesting can increase the accumulation of sugar, especially in this year with more rain, and timely drainage, water and nitrogen reduction, A high concentration of fruit cells, sugar accumulation, the corresponding increase in flavor.
3. Pick the leaves before harvest, the leaves around the fruit are too dense, the light is insufficient, and the fruit sugar accumulation is less. About 10 days before harvesting, it is bagged and the orchard is removed with leaves, which helps the fruit to see the sun, accumulate sugar, and enhance the flavor.
4. timely removal of bags, kiwi fruit bags in the best 3-4 days before harvest, depending on the weather may be, but can not take the bag too early, too early, the fruit in the air for a long time can also be contaminated, too late Not conducive to fruit coloring, requires the background color green, brown hair, so, through a few years of experience, to remove bags before picking fruit 3-4 days is more appropriate.
5. Timely harvesting is not allowed. Early harvest, fruit coloring and sugar content are not high, bagged Hai Wa De and Jinxiang soluble solids up to 6.5%, Qin Meida 7%, harvesting for the appropriate time.
Third, bagging for worms and worms appear. According to the investigation, the fruit surface of the orchard in the late period of the bagging period is still harmed by individual pear pods and pods. At the scene, we can see that where there are worms, most of them are not tight or unsealed in the lower part of the paper bag, that is, the bottom seal, so that the pests are naturally harmed around the fruits. Or poor quality paper bags, rain and rotten.
Solution: Choose a good quality paper bag, paper bag soft and flexible paper, wind and sun will not be bad, not only look cheap, people say that no good goods cheap, this is the first pass, the choice of a good paper bag is essential At the bottom of the second paper bag, only two corners of the ventilation hole must be left unopened; the bottom is fully open; the third is always to check the bagged fruit, and when individual paper bags are broken, it can be replaced in time, so as to eliminate the damage of the insects.
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