The rapid expansion period of potato underground tubers, which is the flowering period, is the key period for determining the yield. Pay attention to the following management work: 1, to flower buds The flowering buds of potatoes need to consume a lot of nutrients, so the emergence of buds in potatoes should be cut off as soon as possible, which can promote the expansion of the tubers and increase the yield. 2, timely earth The pods on which potato plants are grown often grow to the ground, and the tips of the stems turn green or give rise to green leaves, which form new shoots, which can affect the enlargement of the tubers and lead to a reduction in yield. In addition, the small potato wedges are also easy to expose to the ground after the expansion and become green, grow into "outcrops" potato, so it is necessary to timely soil. Potatoes are usually cultivated twice. The first time the buds begin to inflate at the beginning of the bud, the first soil is used. The thickness of the soil is 3-4 cm to prevent the stems from growing to the ground. The second time the soil is grown during the flowering period of the potato, the thickness of the soil is 4— 5 cm to prevent the potato block from appearing on the ground. 3, increase fertilizer 70% of the potato tuber yield is formed from the full flowering stage to the senescence of the stems and leaves. This period is also the period when potatoes need the most fertilizer and water. Watering should be timely, 25 kg of compound fertilizer per acre with water flushing, or flushing with high-potassium fertilization of about 5 kg, in order to ensure adequate water and fertilizer supply. 4, control leggy The flowering period of potato is also the period when the shoots and shoots of the shoots are growing most vigorously. Attention should be paid to controlling the leggy to promote the enlargement of potato tubers. According to the growth of potato, it can spray 0.1% chlormequat to spray the best when the plants bloom.
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Doing Expansion Management to Improve Potato Production