The method of watering potatoes

Potatoes from seedling arch soil to flowering, generally not watered, squatting seedlings, especially when the drought is watered. Cultivation experts have done many comparative experiments on soil with good water retention, and the yield of potato squatting seedlings under water control is 20% and 25% higher than that of unwatered ones. Because the root amount of water-controlled squatting seedlings is equivalent to 2.5 times that of irrigated non-squatting seedlings. With well-developed roots, potato can absorb more nutrients and water from the soil, synthesize and accumulate more photosynthetic matter. Squatting potato seedlings can prevent excessive growth to consume nutrients, form short nodes, thick stems, thick leaves and dwarf plants, develop into strong seedlings, and enhance the ability of resistance to wind and rain, lodging, diseases and insect pests.

Potatoes begin to be watered at the early flowering stage. During the period from the first flowering to the cessation of stem and leaf growth, the growth of tubers was the largest, and the water requirement of plants was also very large. On the other hand, the inorganic elements such as nitrogen, phosphorus and potassium needed for potato growth must be dissolved in water before they can be absorbed by the roots. if the soil is short of water, no matter how many nutrients, the plant can not be used. In general, soil water holding capacity should be kept at 60%, 80%.

At this time, due to sufficient water, potatoes often grow in the middle and later stages, consuming nutrients and lodging, resulting in reduced yield. To this end, chemical control must be implemented. When the potato plant height is 50ml / 55cm, 15% wettable paclobutrazol powder is sprayed on 50g / mu and watered 4 days after application, the obvious height control effect can be obtained.

Stopping watering about 10 days before harvest can improve the quality and endure storage of potatoes.