Surgical treatment of jujube madness
First, the basis. The pathogen of jujube mad disease is mycoplast, which mainly lives in the phloem of jujube tree and is transmitted in the tree through sieve tube tissue. In winter, the mycoplastids were transferred from the aboveground to the roots over the winter, and returned to the branches with the sap flow in the following spring. Accordingly, surgical treatment can effectively eliminate mycoplastids.
2. Methods
(1) main ring saw. Before the jujube leaves fall to sprout the following year, start from the trunk 40 cm from the ground, and saw the ring-shaped trench on the jujube trunk. It is required to saw through the cortex, but not to hurt the cambium. According to the severity of the disease, each jujube tree sawed 3-4 rings, 20 cm apart. In this way, the mycoplastids overwintering in the roots can not return to the branches and leaves in the following spring. In the trunk ring saw at the same time, to remove jujube trees on the disease and insect branches, and then concentrated burning.
(2) main root ring saw. For seriously ill jujube trees, the halo saw trunk is not enough, the main root must also be ring sawed. Methods: the rhizosphere soil was dug up to expose the base of the main root, and then the ring-shaped groove was sawed at the base of the main root to block the sieve tube of the phloem.
(3) cut off the root. While sawing the main root, it is also necessary to cut off the lateral root in the same direction as the diseased mad branch in order to remove the mycoplastids in the lateral root.
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Nanshui pear
Variety source: breeding at the agricultural test site in Nagano Prefecture, Japan. Characteristics: the average weight of single fruit is 360 g, the maximum is more than 500 g. The fruit is oblate and the pericarp is yellowish brown. The flesh is white, soft, juicy, sweet, contains 15% sugar and is of excellent quality. It matures in late September and can be stored for 1 month. The tree has medium potential and strong resistance to scab, but it is sensitive to scab. Cultivation points: there should be watering and drainage facilities in the orchard.
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Easy Family Storage of Atang Pear Fruit
Atang pear is an excellent late-ripening variety. The maturity period is in late October. The price of direct post-harvest sales is not very ideal, and the sales volume is not large. This paper introduces a simple method of family storage, which can store pear fruit until New Year's Day and Spring Festival. The fruit is bright, crisp and sweet, and the taste is better. The benefit is also 2~3 times higher than that of fresh harvest. This method is simple and easy to use, and it is worth learning from fruit growers. 1. Harvest at the right time: harvest at the ripe period of Atang pear fruit (late October) together with the fruit bag. 2. Timely pre-cooling: the picked pear fruit is scattered in the shade.
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