Plant growth regulators are widely used in fruit trees. Aizhuangin, polyoxyeazole, aminoester, sodium nitriol, ethrel, and clopidourea can all be used in fruit trees and play corresponding roles, so as to achieve the effect of improving economic benefits.
We show gradually how plant growth regulators are applied and function from the growth cycle of fruit trees in a given year.
1. The germination period
Fruit trees germinate from mid-March to early April, which may be slightly earlier or later in some places due to climatic factors. Plant growth regulators are rarely used in the germination stage of fruit trees because it is difficult to determine whether the fruit tree is flourishing or not and whether a regulator is needed.
Of course, it's not totally off-limits.
Cytokinin
For example, during the germination stage, cytokinin is applied to the buds, and ointments the size of red beans are applied to each bud. The concentration of 600-800mg/L applied on the full buds in the growing season can effectively increase the number of shoots of young trees, which is beneficial to accelerate the growth and early results, and also accelerate the propagation speed of fine seeds.
2. The growing season
After the bud stage, the fruit tree enters the flourishing growth stage, at this time, if the growth is too prosperous, the growth speed of branch tip is too fast, the increase needs to control flourishing kind of regulator. If the shoot growth is slow, not vigorous, then need to increase the efficiency of growth regulator.
Accused of popular categories:
Multicenter azole: the use of multicenter azole before flowering mainly to page spraying is appropriate, the year can have inhibitory effect. The composition of strip can be changed by using polygonazole, and the number of flower bud can be increased significantly.
Growth-promoting classes:
Amines fresh ester: Amines fresh ester can be used at the initial flowering stage, after fruiting stage and fruit expansion stage. It can promote the absorption and utilization of water and fertilizer, improve the photosynthesis of fruit trees, increase the metabolism of carbon and nitrogen in plants, and then promote the growth of fruit trees.
Fresh and amine ester physiological function expression to promote cell division and elongation, the growth of accelerated growth, differentiation, promote seed germination, promote tillering and branches, and promote root growth and flower bud differentiation, plant senescence, early budding flower, increasing fruit-bearing rate, promote crop early maturity, increase crop yield, improve crop quality. Amine fresh ester has effect on some plant wilt disease and virus disease.
3. The flowering period
After the fruit tree enters the flowering stage, according to the flowering situation, there are many kinds of plant regulators that can be used, mainly for thinning flowers and thinning fruits, improving fruit setting rate, and preserving flowers and fruits.
Sodium nitratol: spray twice at bud differentiation stage and young fruit stage, which can improve fruit setting rate and yield, increase fruit hardness, prolong storage period and supply and marketing period.
Amine fresh ester: spray amine fresh ester with appropriate concentration of amine fresh ester at the beginning of flowering, after fruiting, and during fruit expansion, which can keep flowers and fruits, improve fruit setting rate, make fruits uniform in size, good in color, and increase yield.
Gibberellin: in flowering with gibberellin spray, can lift fruit - set fruit rate.
Naphthoacetic acid: spray with naphthoacetic acid after holding flowers, it can play the role of thinning flowers and thinning fruits.
Ethephon: it can be used for both flower and fruit thinning from flowering to full flowering within 50 days.
4. The results
After fruit trees enter the flowering and fruiting stage, the types of regulators used are mainly in fruit thinning and fruit enlargement, improving fruit quality and increasing yield.
Naphthoacetic acid: use naphthoacetic acid to prevent fruit loss before harvest, preferably 30 to 40 days before harvest. The effect of spraying naphthoacetic acid is related to the air temperature. The air temperature has a good effect, but the low air temperature has a poor effect. It is suitable to be carried out in the evening to increase the absorption of the leaves.
Sodium nitratol: after fruit setting, spray sodium nitratol once every 10-15 days, a total of 6 times, can significantly increase the weight of single fruit, yield is very good.
Chlorfenuron: Soaking fruit stem and spraying young fruit 10 days after filling flowers can promote coloring, increase fruit setting rate, increase fruit size and increase yield.
The application of plant growth regulator in fruit trees has been very mature, and plant regulator has a very obvious effect on improving the economic benefit of fruit trees. Fruit farmers friends if there is a need to consult the use of prevention, measurement.
English
