Nectarine cultivation technology upgraded

In order to improve the production of nectarine, management techniques should be continuously upgraded. Attention should be paid to strengthening the supply of early fertilizer and water in production; strengthening summer shears, improving light, promoting fruit coloring; controlling the amount of fruits retained to prevent premature aging of trees.

1. Fertilizer management, pre-promotion and post-control

According to the characteristics of fertilizer required for each growth period of nectarine, the fertilizer was topdressed in time. The main stage was nitrogen, and the later stage was mainly phosphorus and potassium. From seedling planting to early July, strengthen the management of fertilizer and water, and promote the rapid growth of the canopy. After mid-July, strict control of fertilizer and water. In the nectarine flowering period, the young fruit period, and the fruit expansion period, the leaves are sprayed with “Guoguo Zilingling” + 0.2% urea and 0.2% potassium dihydrogen phosphate, once every 10 days, which helps to alleviate the growth of new shoots. Sitting on the competition for nutrients and increasing the fruit setting rate. In September-October, 5-10 kg of chicken manure per plant was applied, and 0.2 kg of potassium sulfate fertilizer was added, followed by irrigation.

Second, the growing season pruning

The nectarine tree has a strong top-end advantage, many branches, new growth, and flower buds are easy to form. It is important to cultivate high-yield tree shape early. After nectarine colonization, in the first two years to promote growth, in order to rapidly expand the canopy. The result of branch pruning directly affects tree potential and yield. Generally, branches with strong branching ability and low fruit set rate and flat growing branches of upward oblique or juvenile trees should remain long; weak branching and high fruit setting rate Branches and twigs and drooping branches should be short-lived; the growth potential is stronger than that of weak-growing trees, and each fruit branch leaves 1-3 flower buds. The short-fruit branches of weak trees generally do not leave flowers. The wounds caused by pruning are sterilized with a "callus anti-corrosion film" to prevent dry cracking.

Third, control the flower

The nectarine tree is relatively prosperous, and the branches are prone to madness, so it is necessary to inhibit vegetative growth and promote flower bud differentiation. In the nectarine dormancy period, use a cone to pinch two rows of holes in the tender body of the tree body or the lower part of the main branch, and then use the brush ring to brush “Zhuhuawang No.1” to effectively control the growth of new shoots, promote flowers, save nutrition, and improve Fruiting rate.

Fourth, thinning flowers and thin fruit

When the amount of flower buds is large, most of the flower buds and the long middle fruit branches on the thin branches can be removed due to the long double-flowered buds and the late-developing flower buds. The first fruit thinning was carried out in mid-May, mainly to eliminate and produce fruit, deformed fruit, small fruit and basal fruit, and fruit. The second thinning fruit is carried out from late May to early June. Generally, the long fruit is 2 to 3 fruits, the middle fruit is 1 to 2 fruits, and the short fruit is 1 fruit. The leaf to fruit ratio is not lower than 50:1, the fruit spacing is not less than 20 cm.

V. Pest Control

The main diseases are bacterial perforation, brown spot perforation, etc., using "new high fat film" + 70% methyl thiophanate WP 800 times solution, 65% sensible zinc wettable powder 500 times liquid spray cloth. Insect pests mainly include aphids, red spiders, etc., and 10% can be used to purify 3000 times.

Compared with other facilities, nectarines are easy to manage, high in yield, high in price and high in efficiency. Strengthen the above management measures to produce high-efficiency nectarines.