Kiwi fruit will grow green

The color of the skin of normal kiwi fruits after ripening should be brown or brownish, but due to factors such as climate and management, some skins are greenish green or blue-green, the flavor is light, the quality is declining, and it is not resistant to storage. Through comparative analysis, the author believes that the cause of the greening of fruits is that the planting density is too large, the nutrient growth is strong, the canopy is shaded, the ventilation and light transmission are poor, and the second is the excessive use of swelling agents. The third is a single fertilization, especially the excessive use of nitrogen fertilizer, the proportion of nutrients required for fruit growth is not adjusted; Fourth, a large number of late irrigation, too much humidity in the field, the ground temperature is too low is not conducive to fruit ripening later. To solve the problem of green fruit, we should start from the following aspects:

1, the planting density is reasonable, taking into account the fruit tree growth needs of each growth period; summer shear should be light, to ensure a certain amount of foliage, so that the leaf boundary ratio of 4-6:1. In the fall, heavy shears will be used for the second or third sub-shrinking and shearing, leaving enough branches for the next year. Remove the thin branches of the inner hall to reduce the workload of winter pruning, so that the ventilation between the trees and the trees can be preserved, and the ventilation and transparency can be improved, which will help the fruit coloring and reduce the green fruit.

2. It is forbidden to use fruit swelling agents by strengthening the management of soil and fertilizer water, rationally sparsely fruiting and fruiting, and increasing the number of fruit, increasing yield, and improving quality.

3. Determine the amount of fertilizer according to tree vigor and growth period. Before the sprouting, nitrogen fertilizer should be used as the main component, and fruit enlargement should be dominated by phosphorus and potassium. In autumn, the application amount of nitrogen fertilizer should be strictly controlled, and foliar spraying should be strengthened. Improve and regulate nutrient mechanisms to promote glucose conversion.

4, strictly control the amount of water. After entering the autumn, the kiwifruit enters the second growth peak, the autumn shoots grow rapidly, the tree body is prone to prosper, and the nutrients are consumed in large quantities. Therefore, after the end of July should be properly controlled watering, proper drought can control the growth of tree over-prosperity, reduce nutrient consumption, increase nutrients, accelerate sugar conversion and flower bud differentiation in the coming year, so that the kiwifruit grow and reach color, storage, and excellent Fruitful standards to facilitate market sales.

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