Cockroach is a fruit tree unique to China, and the yield per plant of a single plant of the age of 200 to 350 kilograms is high. From late July to late August, it is a period of time for flowering. Because summer shoots are the main result of its mother shoots, after summer shoots germinate, it is necessary to accelerate its robust maturity, making it an excellent mother tree. Judging from the habits, the flower bud differentiation of alfalfa began in early August and it is an important measure to ensure fruitful harvest.
For a long period of time, fruit growers have been accustomed to applying fertilization to earthworms four times, namely fruit fertilizer, strong flower fertilizer, fruit fertilizer and strong fruit fertilizer. At present, in some places where labor-saving cultivation is used, do you not need to apply fertilizer before flowering (ie, strong flower fertilizer)? According to the experience of high-yield orchards, the application of wolfberry fertilizer, except for the fruit-picking fertilizer, is the most important one in the whole year. The effect of pre-harvest fertilizer is important and cannot be ignored. If the fruit is properly used after fruit-picking and pre-flowering, it will be improved. Yield and fruit quality play a significant role.
The effects of fertilizers before flowering are numerous. The first is to supplement the nutrients needed for flowering. Since the tree undergoes germination, summer shoots and flower bud differentiation from July to August have consumed more nutrients; in addition, the number of flowers per panicle is greater Many flowering periods last for more than four months. When flowering, they need to consume more nutrients. Therefore, to apply fertilizer before flowering is to supply the necessary nutrients for the flowering of thistle. Applying fertilizer before flowering is good for delaying flowering. In the southern part of the wolfberry producing area, most of the pods in the area are exposed to low-temperature frost, and the flowers are more resistant to freezing than the younger ones. Therefore, postponing the flowering period helps to avoid the early stage of the cold hazard, so that the late flowering flowers increase the rate of results, and thus can maintain a bumper harvest. The timely application of fertilizer before flowering can promote strong tree vigor, dark green leaves, and improve the frost resistance of fruit trees.
Apply fertilizer before flowering and catch the most suitable time from early September to early October. The amount of fertilizer should account for about 20% of the total fertilization for the whole year. For bio-covered gardens, urea and compound fertilizers are sufficient for pre-harvest fertilizers because the cover can provide a large amount of organic matter and other fertilizers, as well as avoiding rain erosion and less loss of fertility. The uncovered orchards, due to the erosion of the rain and the erosion of fertilizers, in addition to the addition of NPK, the three elements, but also pay attention to increase the application of organic fertilizer, potash, lime, each plant fertilizer bar 30 to 50 kg, urea 0.25 ~ 0.5 kilograms, 15 to 20 kilograms of plant ash, and 2 to 2.5 kilograms of calcium magnesium phosphate. In addition, red soil orchards with high viscous and pH values ​​below 4.5 can be used to increase lime by 2 to 2.5 kg per plant, which can neutralize acidity and avoid deficiency of calcium caused by calcium deficiency. The quality.
The top dressing supplemented with nutrients has a significant effect. One of the most effective is the use of 0.3% to 0.5% urea or 10% human urine spray. If you can spray 5-6 times, the effect is better. In addition, 0.3% potassium dihydrogen phosphate solution, or 0.2% potassium sulfate solution, or 0.3% to 0.5% calcium superphosphate leachate, or 10% turfgrass leaching solution can be used to supplement the tree nutrients. Improve cold resistance and cold resistance. For some orchards that do not bloom, or fruitless after flowering, paclobutrazol can be used to control the tip to promote flowering. The method of application is the application of earth or canopy, and the soil application is selected in October. According to the projected area of ​​the canopy, the effective content of paclobutrazol per square meter is 0.6-0.8 g, which can be used to control the tip and promote flowering.
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