[potato classroom] Potato yield can be increased by mastering these three points in winter potato fertilizer and water management.

Winter potato fertilizer water management:

It is proved that the yield of potato tail bud is only 1/3 of that of terminal bud or lateral bud. Therefore, tail bud should be discarded when cutting seed potato. High ridge cultivation on both sides of the soil can increase the loose soil at the root of the living soil layer, which is conducive to the extension of stolons, and can increase the ground temperature to meet the temperature required for early rhizome development. Potato needs a lot of nutrients in its whole growth and development. In the area with poor soil and low nutrient content, soil testing and formula fertilization must be carried out to meet the needs of N, P, K and trace elements for crop growth and development, especially in tuber expansion stage, which can greatly increase yield.

Potato commodities are underground tubers, which do not need pollination at all, and pregnant buds need to consume a lot of nutrients to bloom, in order to obtain high yield, must be crossed to top flowers, in order to save nutrients to promote tuber growth. Expert research proves that in the process of potato growth, especially in the potato expansion period, such as sufficient magnesium fertilizer, not only high yield, but also starch accumulation, good quality. Therefore, when the plants are 45 cm tall, each plant should be followed by 50-100 grams of magnesium sulfate dissolved in water. Under the condition of applying enough base fertilizer, spraying 0.1% magnesium sulfate, 0.3% potassium dihydrogen phosphate, 1000 times triacontanol and diguozhuangdiling mixture once every ten days from leaf expansion for 3-5 times continuously can significantly increase yield.

Method of increasing production:

1, should not apply too much chlorine fertilizer. Potatoes should not be applied too much chlorine fertilizer, the current concentration reached a certain level, it will produce poison to plant roots, it can make the starch and sugar content of the product decreased, affecting yield and quality, serious crops will die, so careful use of ammonium chloride, potassium chloride and other fertilizers.

2. Organic fertilizer shall be applied as base fertilizer. Base fertilizer application of commercial organic fertilizer, such as the application of ordinary farm manure must be retting high temperature decomposition to kill grass seeds and pathogens, conditions can also be compost aging 1-2 months; base fertilizer application should be 3-5 cm away from seed potatoes, so as not to affect seed potato germination and emergence.

3, foliar fertilization to grasp the timing. Foliar spraying of trace elements and diguozhuangdiling should be done before 10:00 a.m. or after 3:00 p.m. Spraying for the first time after the height of seedlings is 30 cm, spraying for the second and third times every 7 days. Improve the ability of underground fruit to absorb nutrients and expand vitality, promote the development speed.

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