What are the dragon fruit management points in May?

The beginning of summer means that the season of cool, warm and comfortable will come to an end, and hot and rainy summer will soon come. Similarly, the dragon fruit in May will generally turn from a fruitless period to a fruiting period. The climate difference between the north and the south is relatively large, but it has also been gradually transferred to the flowering period. The management focus of different orchards in different seasons and different growing seasons is different. What are the key points of dragon fruit management in May?

1, timely drainage should be remembered

After entering May, the rainy weather will gradually increase, and the high temperature, high humidity, and rainy weather will easily lead to water accumulation in the orchard and the breeding of diseases and pests. The orchard management should do a good job of cultivating the soil as soon as possible and repairing the entire canal to facilitate drainage of accumulated water as soon as possible. Branches and pruning branches that grow pests and pests are removed in time to remove orchards to prevent the breeding of diseases and insect pests. Greenhouse growers should pay close attention to the water seepage in the shed, and prepare for artificial drainage when necessary. Long-tailed dragon fruit plants must not be soaked in water for a long time to avoid irreparable serious consequences.

2, fertilizer fertilization is the basis

Some orchard plants have begun to sprout buds and are gradually expanding. It is difficult for the orchards planted in open fields to regulate the proper temperature and light required for the growth and development of dragon fruit. Therefore, only plant nutrients can be supplied in a timely manner to ensure a better flower growth. fruit. Conditional northern greenhouse growers can carry out the necessary temperature and light control according to the growth characteristics of dragon fruit, so as to increase production and income, and scientifically cultivate scientific management.

In addition, the growers have applied high-phosphorus high-potassium compound fertilizer in April, and continued to apply high-phosphorus water-soluble fertilizer once in early May, together with the application of humic acid water-soluble fertilizer, and foliar spray of boron-containing elements. Fertilizer to promote the pollen tube elongation and pollination and fertilization, reduce the probability of flower bud yellow off. The principle of using fertilizer throughout the year is: high potassium, low phosphorus nitrogen. The principle of fertilization during the fruiting period is two high-potassium plus one-time balanced water-soluble fertilizers, and one-time fertilization during the ten days of fruiting. If you want to use three fifteen compound fertilizers, you need to add potassium dihydrogen phosphate, otherwise the fruit will not be well colored and eaten sour.

3, sparse flower buds are the key

In order to improve the quality and value of individual fruits, it is still necessary to carry out sparse fruit thinning (removal of contiguous flower buds, poor quality and malformed buds, etc.). When the shoots hang down to about 20 cm from the ground, they should be torn in time to prevent excessive growth of shoots. Compatible nutrients with flowers and fruits.

The germination cycle of the same batch of buds is usually 7-10 days, after which the malformed buds should be sparsely removed, and vigorous buds should be reserved as far as possible. Buds born in the lower part of the fruiting branch are easily polluted by ground mud during the development process, and are prone to pests and diseases, resulting in a decrease in fruit value.

Generally, 4-5 buds may emerge at the same time on one branch. If there are too many fruits, there will be many small fruits. At the same time, because the nutrients are consumed, the branches will need to be removed through the thinning and fruit thinning techniques. 1-2 fruit can be left, but also according to the growth trend of dragon fruit decided to increase or decrease the amount of fruit, the ideal principle of thinning flowers is to keep a branch of "a bud of a flower and a fruit", as far as possible to change the branches and bear fruit.

4, disease prevention Mo hesitant

With a high temperature, coupled with rain, diseases such as ulcer disease, stalk rot, and root rot easily spread, growers can spray mancozeb and copper preparations every 15-20 days to control ulcer disease and stem rot. Diseases, plants that have been infected with root rot can be treated with hymexazol 1500 times organic water-soluble fertilizer, rooting 1-2 times depending on the situation, controlling root rot, and promoting new roots.

The main insect pests during the prosperous period of fruit and fruit are Lepidoptera pests, ants, Spodoptera littoralis, aphids and snails. A small Spodoptera litura can kill a flower bud in less than three days. If you find that the calyx scale starts to yellow, you may notice that the harmful insects in the scales are delicious. Can be sprayed cypermethrin, avermectin and A-dimensional salt for prevention and treatment.

5, weeds to help harvest

Too much weeds can easily separate the root nutrient of dragon fruit, breed pests and diseases, etc., and should be promptly removed. When the weeds are too much, they can be manually removed and covered with grass cloth, etc. It is also possible to cover the effects of moisture-proofing and grass-stump-filling of rice bran, wheat bran, and peanut shells. Or spraying chloramine phosphate to kill, but when spraying glufosinate, pay attention to the concentration should not be too large and can not be too close to the plant, so as not to hurt the root (careful use).

Pharmacy should be used in rotation and cannot be reconstituted. Otherwise, it will not only reduce the effect of the drug, but also cause the development of flowers and fruits.

Disclaimer: Some articles in this website have been transferred from the Internet. If there is a third party's legal rights, please inform this website. phone

YT-H706

Shenzhen Sunshine Technology Co.,Ltd , https://www.szyatwin.com