Method for citrus bare-root transplanting in summer

Abstract

The invention discloses a method for citrus bare-root transplanting in summer. The method solves the problems that in the prior art, after citrus seedling transplanting, the seedling recovering stage is long, the winter dormant period or the summer drought period starts immediately after seedling recovering, and accordingly primary flowering time and primary fruiting time are delayed. The method includes the following steps that firstly, rootstock seedlings are cultivated in November and December; secondly, the rootstock seedlings are planted in April and May in the second year; thirdly, grafting is conducted from December of the second year to March of the third year; fourthly, transplanting is conducted in June and July in the third year; fifthly, good-quality citrus seedlings are selected for bare-root seedling lifting; sixthly, an organic fertilizer and an inorganic quick-acting fertilizer serve as transplanting base fertilizers; seventhly, hole digging and transplanting are conducted on soil with the pH value being 4-8, the prepared organic fertilizer and the inorganic quick-acting fertilizer are mixed and applied into transplanting holes, then the good-quality citrus seedlings are transplanted and sufficiently watered with rooting water, the soil is covered with mulching films, finally, pores around the citrus seedlings are sealed with fine soil, and leaves of the seedlings are watered in the morning once and at night once every day within one week after transplanting.

Description

technical field [0001] The invention relates to the field of fruit cultivation, in particular to a summer bare-root transplanting method for citrus. Background technique [0002] China is rich in citrus resources and has a long history of cultivation, with written records dating back more than 2,000 years. There are also various methods of citrus propagation, among which when grafting is adopted, bare root transplanting is carried out in spring or autumn. Because bare-root transplanting will damage the root system to varying degrees, so that the ability of the root system to absorb nutrients and water is significantly reduced, causing the leaves above the ground to wither without sufficient water supplement under transpiration. Generally, the bare-root transplanted seedlings are selected to be carried out in spring and autumn when the temperature is relatively low during grafting and propagation. Therefore when adopting the grafting propagation method to carry out citrus l...

AI Technical Summary

Problems solved by technology

There are obvious deficiencies in this method, mainly because when transplanting bare roots in spring and autumn, the seedlings have a relatively long growth period. In order to improve the survival rate and reduce leaf transpiration, generally one-third of the aboveground part of the seedlings will be cut off. branches, thus causing damage to the seedling tree, delaying growth and flowering; secondly, although the saplings transplanted with bare roots in spring and autumn have a high survival rate, the slow seedling period is long, and the seedlings transplanted in autumn have just passed the slow seedling period. During the dormancy period in winter, the seedlings will stop growing after entering the dormant period in winter. The saplings will not grow until the ground temperature and temperature warm up in the next spring. However, the seedlings transplanted in spring will often encounter the summer drought period when they start to grow just after the slow seedling stage. almost stopped growing

[0003] Therefore, when the traditional citrus is transplanted with bare roots in spring and autumn, the root system is poorly developed, and the spring shoots are short, which often leads to a year later flowering and fruiting. Generally, it takes 3-4 years after transplanting to enter the first flowering and first fruiting period.

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