Method for relieving fruit cracking of citrus

Abstract

The invention discloses a method for relieving fruit cracking of citrus, and belongs to the technical field of citrus planting. The method comprises the steps that a mixture of decomposed farmyard manure and calcium superphosphate is applied to soil, and the soil is irrigated with water containing a bactericide and ploughed; calcium nitrate and boric acid or borax are topdressed on leaf surfaces, spraying is started for the first time 7-10 days before citrus blooming, spraying is performed once every 7-10 days after the full-bloom stage, spraying is continuously performed twice, and spraying is performed totally three times before and after blooming; a calcium-containing foliar fertilizer is sprayed in the young fruit stage of the citrus; and a buffer matrix is applied to orchard soil in the fruit setting period, and tree bases are covered with weeds or straw in the fruit expanding period. By adopting the method, the fruit cracking rate of the citrus is decreased, and the yield of the citrus is greatly increased.

Description

technical field [0001] The invention relates to the technical field of citrus planting, in particular to a method for alleviating citrus fruit cracking. Background technique [0002] Citrus is a plant belonging to Rutaceae, which likes warm and humid climate. It is a tropical and subtropical evergreen fruit tree. Citrus fruit cracking is a common physiological disease in production. It mainly occurs during the growth period of fruit expansion. Fruit cracking directly affects the further improvement of citrus yield and quality, and causes huge economic losses to citrus production. Wenzhou citrus is the main citrus variety cultivated in a large area in Zhejiang Province. It is very popular among consumers because of its thin skin and delicious taste. However, during the growth period of fruit expansion, especially when there is sudden heavy rain after a long drought, fruit cracking frequently occurs, causing serious economic losses. The non-patent literature "Comparison of d...

AI Technical Summary

Problems solved by technology

However, during the growth period of fruit expansion, especially when there is sudden heavy rain after a long drought, fruit cracking frequently occurs, causing serious economic losses.

The non-patent literature "Comparison of different citrus varieties and the effect of calcium application on citrus" (Chen Guifen et al., "Chinese Horticultural Abstracts", 2013, 29(1): 1-2) discloses that in the process of planting management, spraying calcium fertilizer It can reduce the rate of citrus fruit cracking, but foliar spraying is easily affected by the weather, and the frequency of spraying is more frequent, time-consuming and labor-intensive. At the same time, fruit cracking is also related to the uneven nutrient supply of the fruit. Only by spraying calcium fertilizer on the foliage, the soil retains water and fertilizer. The performance is poor, the nutrient supply is not balanced, and the desired effect cannot be achieved; the patent CN201710938667 discloses a method for preventing and controlling citrus fruit cracking, which uses soil improvement to retain water, and adds calcium-containing materials, such as egg shells, rock powder, calcium Fertilizers are used to increase the absorption of calcium by fruit trees to reduce the rate of citrus fruit cracking. However, due to poor soil fertility, calcium and other soil nutrients are easily lost after heavy rain. Therefore, although this method solves the problem of soil water retention, it fails. Solve the problem of unbalanced soil nutrients, and calcium is easy to lose, and it cannot promote the absorption of calcium by fruit trees, and the fruit cracking rate is still high

[0003] Therefore, in the above-mentioned management methods, the problems of soil water and fertilizer conservation and calcium absorption cannot be solved at the same time. The actual operation is easily affected by environmental conditions such as weather, and there are certain limitations. The technical means that can increase the calcium absorption of fruits is the focus of preventing citrus from cracking and reducing losses.