Winter is the busy season for kumquat growers, and kumquats are generally marketed during the Spring Festival. Therefore, in order to ensure the smooth winter of kumquats and a better yield, it is necessary to take measures to keep warm to deal with the cold weather. , Because kumquat likes wet and is afraid of freezing, and has relatively high requirements on the environment, so kumquat needs to be covered with kumquat film in winter to ensure the normal growth of kumquat.
Northern Guangdong and parts of Guangxi are important production areas for kumquat planting. The kumquats produced are more popular. Due to the relatively low temperature in these two places, most of the sugar oranges and kumquats that are planted need to be covered with kumquat film. To resist the cold weather and frost, it took more than two months from covering the kumquat film to removing the film before picking the fruit. During this period, neither fertilization nor foliar fertilizer was sprayed, so the problems caused were not few:
1. The kumquat fruit is still absorbing nutrients on the tree. If the tree has insufficient nutrient reserves, the tree vigor is easy to decline. The longer the fruit bearing time, the greater the impact on the tree vigor.
2. Because the work cannot be done after covering with kumquat film, the work of restoring tree vigor + flower promotion is delayed for 1-2 months, and winter fertilizer becomes spring fertilizer. If the relevant nutrients are not supplemented before covering kumquat film , the nutrition of the tree is seriously lost, and it is too late to supplement some elements after the film is removed, and the flower bud differentiation next year will be affected.
Therefore, for kumquat trees covered with kumquat film, it is recommended to take the following measures:
1. Before covering the kumquat film, apply a micro-replenishing root calcium + micro-replenishing energy, supplementing phosphorus and calcium, accumulating nutrients and maintaining tree vigor;
2. As far as possible before the fruit turns color, spray 1-2 times of micro-appliqué 1000 times + micro boron 1500 times to accumulate nutrients for flower bud differentiation;
3. After color change, spray 2 times of micro-covering power, calcium supplement, strengthen fruit firmness, and reduce the problem of fruit softness and dry water in the later stage.