To improve the fruit set rate and fruit quality of the cockroach, the focus is to do the slashing, thinning and thinning of the fruit and apply the stable fruit fertilizer and strong fruit fertilizer.
Eucalyptus usually spreads in the flower buds to the fruit before flowering. In the case of no frost damage, it should start early, usually 2-3 times. The number of fruits left, large fruit varieties such as “Dahongpaoâ€, 1-3 per ear, small fruit varieties such as “Baozhuâ€, 4-6 per ear. In general, the fruit is small, the fruit shape is large, and the maturity is early. When the ear is thin, the number of flowers with many spikes should be early, and the number of spikes in the whole tree is 50-60% of the whole shoot with the spikes. The top of the crown is sparse, the lower part of the canopy is sparse, and the middle and lower parts of the canopy The flower spikes account for about 60-70% of the spikes left in the whole tree. At the same time as the sparse buds (flowers), remove 2-3 small stalks from the lower part of the ear and the apex of the whole axis, leaving 3-4 small peduncles in the middle. In places where there is little damage to the frost, the flowers in the center of the flower are kept in the ear, and the flowers that are opened in the evening are removed. The result is large color and good quality.
Spraying 0.2-0.5% borax aqueous solution during the flowering period can promote the eucalyptus into the fruit set. After thinning the fruit in the middle or late February or early March, the fruit fertilizer (pre-emergence fertilizer) is applied to meet the nutritional needs of fruit development and spring shoots, and the fruit drop is reduced. In the rapid expansion period of the fruit (from mid-April to early May), the fruit fertilizer is fertilized, which is beneficial to increase the weight and sugar content of the fruit. A 2-3% calcium perphosphate leaching solution may be added with 0.3-0.5% urea, or a 0.2-0.3% potassium dihydrogen phosphate solution, generally sprayed 3-4 times.
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