Fertilization principle
In view of the large difference in fertilizer application rate, the amount of fertilizer, the ratio of nitrogen, phosphorus and potassium, the fertilization period and methods are unreasonable, neglecting the problems of fertilization and irrigation coordination, the following fertilization principles are proposed:
(1) Reasonably increase the application rate of organic fertilizer, according to soil fertility, early, late maturing varieties and yield levels, rationally regulate the application level of NPK fertilizer, the fertilizer requirement of early maturing varieties is 20%~30% less than that of late-maturing varieties; pay attention to calcium and magnesium Combined application of boron, zinc or copper fertilizer;
(2) Fertilizer distribution It is advisable to carry out the autumn base fertilizer one month after the peach fruit is harvested, and the peach fruit expansion period is the key period of top dressing;
(3) Combined with high-quality cultivation techniques, it is not advisable to apply nitrogen fertilizer and a large amount of irrigation for 3 weeks before picking, so as not to affect the quality; in the plain area where the drainage is not smooth in summer, the soil management work such as ridge, film and grass should be done well; Arid areas advocate the use of plastic film covering, hole storage and fertilizer technology.
2. Fertilization advice
(1) The output level is 3000 kg/mu or more, the organic fertilizer is 2~3 square meters/mu, the nitrogen fertilizer (N) is 15~18 kg/mu, the phosphate fertilizer (P2O5) is 8~10 kg/mu, and the potassium fertilizer (K2O) is 18~22 kg. /mu;
(2) Production level 2000~3000 kg/mu, organic fertilizer 1~2 square/mu, nitrogen fertilizer (N) 12~16 kg/mu, phosphate fertilizer (P2O5) 7~9 kg/mu, potash fertilizer (K2O) 17~20 Kg/mu;
(3) The production level is 1500~2000 kg/mu, organic fertilizer is 1~2 square/mu, nitrogen fertilizer (N) 10~12 kg/mu, phosphate fertilizer (P2O5) 5~8 kg/mu, potash fertilizer (K2O) 12~15 Kg/mu.
For the orchard with early defoliation or high load in the previous year, the top dressing should be strengthened. Before the germination, 2~3 times of urea can be sprayed 2~3 times. After germination, before the middle of July, the urea should be pressed twice periodically. Sprayed once with potassium dihydrogen phosphate, the concentration of potassium dihydrogen phosphate is 0.3% to 0.5%.
If the amount of organic fertilizer applied in the previous year is large, the nitrogen and potassium fertilizer applied in the autumn of the year may be reduced by 1~2 kg/mu as appropriate, and the amount of nitrogen and potassium fertilizer in the fruit expansion period may be reduced by 2~3 kg/mu as appropriate.
All organic fertilizers, 30%~40% nitrogen fertilizer, 100% phosphorus fertilizer and 50% potassium fertilizer are used as the base fertilizer in the autumn after peach fruit picking. The remaining 60%~70% nitrogen fertilizer and 50% potassium fertilizer are in spring. Peach trees were applied in the germination stage, hard core stage and fruit expansion stage (1~2 times of early maturing varieties and 2~3 times of late maturing varieties).
This article URL: 2016/2017 autumn and winter peach tree science fertilization guidance advice peach tree fertilization skills
Vaseline Gauze,Vaseline Gauze Pads,Vaseline Coated Gauze,Sterile Vaseline Gauze
Henan Anbang Medical Supplies Co., Ltd. , https://www.anbangmedical.com