Planting techniques of navel Orange in Gannan

In the past, my favorite food was ice sugar orange. I thought it tasted the best among oranges. Later, I inadvertently ate Gannan navel orange and was attracted by its rich orange fragrance and sweet and sour taste. I have been particularly fond of this kind of orange ever since. Today we will talk about the planting technology of Gannan navel orange.

Planting techniques of navel Orange in Gannan

1 planting density: reasonable close planting is advocated. Mountain orchard row spacing 4m, plant spacing 2.5 to 4 meters, 42-67 plants per mu; gentle slope flat row spacing 5 meters, plant spacing 3 to 4 meters, 33 to 44 plants per mu.

2. Digging the planting ditch: the planting ditch should be centered on the outside of the terrace at 1: 3-2: 5, with a width of more than 1 meter and a depth of more than 0.8 meters. The ditch wall is steep and straight, as wide as the top and bottom.

3, planting ditch backfilling: each meter planting ditch is divided into 3-4 layers to bury 20-30 kg of crude organic fertilizer, such as rice straw, awn dustpan, peanut stem manuscript, etc., acid soil also needs to add 1 to 1.5kg lime, each layer with four-toothed rake hook organic matter slightly shake, so that the soil mixed with organic matter, strive to mix well, the final filling should be about 20cm higher than the original ground.

4. Make fruit pier: the planting ditch shall set the planting point according to the distance between plants, dig a hole about 40cm deep and wide, and apply 1-2kg cake fertilizer, 1-1.5kg phosphate fertilizer, 10-15kg animal manure or barnyard manure. After fully mixing with the soil, cultivate the soil to make a mound, which can be planted after the fruit pier is buried with organic manure for more than 30 days.

5. Planting period: generally divided into spring planting and autumn planting. Spring planting is planted before the spring shoot of navel orange sprouts, and it is generally appropriate in Gannan in mid-late February. Autumn planting is generally planted in autumn after the autumn tip of the seedling is mature to early November. In recent years, Gannan has promoted nutrition bag pseudo-planting with soil transplantation, which is not limited by season, has a long transplanting time, and has a high survival rate and garden success rate.

Pruning method of Gannan navel orange

1. Branch group renewal: all the weak branch groups around the crown are truncated to retain the strong or mediocre branch group. Try to keep the leafy branches so that they can quickly restore the tree.

2. Explicit renewal: sawing off the main branches and secondary main branches that do not meet the requirements of shaping for the trees that are extremely weak and most of their leaves fall off. A group of branches that truncate all reserved lateral branches. Pick the heart of the new shoot in time, promote the branch, make it quickly form a new crown.

3. Renewal period: the renewal and pruning of old trees must be carried out before sprouting in early spring, and wax should be used to protect the cut, saw and white the trunk. Attention should be paid to the protection and shaping of new shoots after sprouting in spring.

Insect control methods of navel orange in Gannan

1. Control whitefly, shell insects and leaf rollers with 48% Lesbon EC diluted 800-1000 times and sprayed again at intervals of 20 days.

2. To prevent and cure anthrax and soot, 80% Dasheng MMI 45 wettable powder is used to dilute 600 × 800 times spray, and then spray again at intervals of 15 days. Dasheng MMI 45 has a special effect on soot, and soot can be effectively removed by spraying 3 times in a row.

3. Red and yellow spiders can choose 9.5% mite, that is, dead EC 1500 times spray. First of all, start with the cultivation of healthy trees, appropriately increase the application of nitrogen fertilizer to improve the nutrition level of the tree, and then pull the Qiangwang autumn shoots into a drooping or horizontal state before flowering, so that the vast majority of flowers bloom downward, reduce the sunny fruit, and prevent the occurrence of navel yellow. again in the first and second ten days of June to mid-July, combined with fruit protection, spray 30mg / L "920" solution, spray twice. The navel of fruit was sprayed with 600-fold "xanthate" solution from late July to late August to inhibit the occurrence and spread of umbilical yellow disease.

Fertilization method of navel Orange in Gannan

1. Boron fertilizer was applied to the soil in spring. Boron fertilizer should be spread before sprouting. 10 grams per adult tree per year, and 5 grams per tree less than 3 years old. Boron fertilizer must contain more than 11% pure boron. Mix with an appropriate amount of sand and sprinkle symmetrically on the tree plate. It is not suitable to mix organic fertilizer with boron fertilizer, because organic fertilizer is dry and wet, so it is difficult to mix boron fertilizer evenly.

2. Boron fertilizer was sprayed on the leaves during the growing season. 0.1% to 0.2% boron fertilizer was sprayed on the leaves for 2 to 3 times. The first time was combined with flower and fruit protection in April and May, and the second and third times were carried out in the fruit expansion period from June to August. It is best to spray boric acid with a boron content of not less than 13%.

3. Correctly identify boron fertilizer. Fake boron fertilizer and serious lack of boron content are the main reasons for the serious boron deficiency of navel orange trees in our city. Be sure to correctly identify boron fertilizer, do not mark pure boron content, mark pure boron content less than 11%, no manufacturer or manufacturer address unknown, no trademark boron fertilizer.

Gannan navel orange planting is best in acidic soil and red soil, and there must be sufficient light and Rain Water. It is necessary to do a good job in the following management measures in order to grow Gannan navel oranges with a good sense of export. I believe that as long as we have done a series of work, the output will be good, and the income will be considerable.