Christmas decoration and gifts
Cute Christmas Decorations,Animal Christmas Ornaments,Christmas Decorations,Christmas Decorations Ornaments COFCO HEBEI INTERNATIONAL TRADING CO., LTD. , https://www.cofcohb.com
1. Young trees fertilize and fertilize young trees for the purpose of promoting growth and rapidly forming high yield crowns. The application of basal fertilizer for colonization is mainly based on compost, manure, human and animal manure, and cake-baked manure. Each application of 10-15 kg, with a small amount of phosphorus, potassium, calcium fertilizer, can apply calcium phosphate or calcium magnesium phosphate 1 kg. In addition to the use of basal fertilisers, in conjunction with pruning and cultivating branch shoots, fertilization and mastering the principle of cultivating one branch of fertilizing once, the farmer's fertilizer was used as the main fertilizer, and a small amount of available nitrogen fertilizer was applied. The young guava is applied at least twice a year as the main fertilizer, and the first time it is applied between August and September. It can apply 20-30 kg of compost per plant and 0.5 kg of compound fertilizer, and the second time in April-May of the following year. Compound fertilizer 1.5~2.0 kg, with foliar fertilizer.
2, the results of tree fertilization Because guava can be flowering throughout the year, the results, so the results of tree fertilization should be based on the development of several flowers and fruit as the focus to determine, promote the development of strong shoots, promote flowering results, improve soil, promote root hair For the purpose of proceeding. At present, there are not many researches on the nutritional characteristics and nutrient requirements of guava. The fertilization of guava in various places is based on production experience to a large extent.
The guava producing areas in Guangxi are mainly fertilized according to the characteristics of their growth results. They are usually applied during the germination period of the new shoots from February to March. The flowering fertilizers are applied during the budding period from March to April, and the fruit fertilizers are grown during the fruit enlargement period in May. July is a rapid increase in the first fruit making before harvest. It is necessary to apply a stronger fruit fertilizer and promote the second fruit tree branch to germinate. In September and October, the second fruit firming fruit fertilizer and the third fruit tree fruit sprout, 11~ In December, Shi San made a strong fruit fertilizer. After harvesting fruit from January to February of the following year, it applied winter heavy fertilizer after germination.
In the Guangzhou area, the middle and late-maturing varieties mainly cultivate positive fruiting, so fertilization is mainly applied before spring shoot germination, during fruit development, and after fruit picking. For early-maturing varieties with turning flowers and fruit, they are making fruit and turning fruit. After each harvest, apply one time. In Taiwan, guava is cultivated in the perinatal period to reduce summer and autumn fruits and increase winter and spring fruits. It is usually applied once in 2, 5, 7, 8 and 11 months and in August and November in winter. The development of spring fruit and the improvement of quality play an important role and is indispensable for the adjustment of the maturing period. Organic fertilizer can be applied in February as a base fertilizer for slow decomposition and utilization. In India, nitrogen and potassium fertilizers are generally applied four times in February, early May, early July and August.
The fertilizing amount of guava and the suitable proportions of N, P and K vary widely. In the ten years after the guava cultivation, Taiwan’s application rate has increased year by year with the increase of the age. The ratio of N, P and K before the 5th instar was 1:1:1, and the ratio gradually shifted to (after 10 years) 2:1:2. Ke Li-like recommended the annual fertilization amount of Thai guava as 0.2 kg of nitrogen fertilizer, 0.1 kg of phosphorus pentoxide and 0.4 kg of potassium oxide, and the ratio of N, P and K is 2:1:4. The annual fertilization rate of Indian guava high-yield garden was 0.583 kg of nitrogen, 0.271 kg of phosphorus, and 0.399 kg of potassium, and the ratio of N, P and K was 1:0.46:0.68. The annual application amount of adult guava in South Africa was 0.224 kg of nitrogen, 0.045 kg of phosphorus and 0.20 kg of potassium, and the ratio of three elements was 1:0.20:0.89.
When the fertilizer is applied, a shallow ditch can be dug in the vertical position of the canopy. The length of the ditch is 0.7-0.8 meters, the width is 0.2-0.3 meters, and the depth is 0.1 m. Fertilizer is applied to the ditch and the mixture is covered with soil. In addition, phosphate fertilizer can be digged at a distance of 1.0 to 1.6 meters from the trunk at a length of 0.6 meters in the ditch to increase fertilizer utilization. If the fertilization in dry season is matched with irrigation, the fertilizer effect will be better. In addition, dressing topically has a good effect on guava. The effect of applying zinc on the leaves was obvious, and the soluble solids in the fruits were also improved and the quality was improved. The application of calcium nitrate increased the speed of vegetative growth, significantly shortened the flower bud development period, and earlier flowering, improved the fruiting rate. Spraying 0.6% zinc sulfate, 0.2% boric acid and 0.05% ammonium molybdate in the initial flowering stage and young fruit stage has a good effect on improving the quality of summer and winter fruit. Taiwan sprays once every five days in September and October, and sprays 0.4% to 0.6% potassium dihydrogen phosphate three times in succession, which can improve the quality of winter and spring fruit. When spraying leaf fertilizer, the concentration in the leaf shoot stage of the shoot is lower, and the concentration of the leaves may be higher after the leaf is mature.
The rational fertilization management technology of guava
Fertilization is an important measure to maintain soil fertility and meet the nutrients needed for fruit tree growth and development. Guava blossoms many times a year. It has a long fruiting period, high yield, and high nutrient consumption. Therefore, it is necessary to pay attention to the management of fertilization in order to maintain the growth potential and improve soil fertility. Studies have shown that the nutrients taken by each 100 kg of guava fresh fruit are: 1.83 kg of nitrogen, 0.39 kg of phosphorus, 1.62 kg of potassium, 0.90 kg of calcium, 0.22 kg of magnesium, and 0.24 kg of sodium. The ratio of N, P, K, Ca and Mg is 1:0.21: 0.89: 0.49: 0.12. The guava nutrient requirement is related to the variety, yield, pruning degree and other factors. The higher the guava production, the heavier the pruning and the more nutrients needed.