How to judge whether the flowers are lack of nutrition?

Nutrition is needed both in crops and flowers. The editor below will share it with you.

The nitrogen deficiency plant is thin, the branches are slender and hard, and the leaves and florets are small. The leaf color from the old leaf to the new leaf gradually changes from thick green to light, then appears red-purple, until the wilting and falling off, and when the whole plant loses green seriously, it means that the flowers are lack of nutrition and need to be fertilized. Can increase the application of rotten human feces and urine, cake fertilizer, barnyard manure or ammonium sulfate, urea, ammonium nitrate and other fertilizer control.

The phosphorus-deficient leaves changed from dark green to copper, and the veins (especially the petiole) were yellow and purplish. Difficult to form flower buds, small and small flowers and light color, resulting in poor fruit development, and even early withering and withering shows that flowers lack nutrition and need to be fertilized. Can increase the application of bone meal, fish meal, poultry fertilizer or calcium superphosphate, ammonium phosphate, potassium phosphate (phosphorus, potassium compound fertilizer), generally with about 0.10% aqueous solution as extra-root topdressing.

The potassium-deficient plants are short and the stems are soft and easy to lodge. The leaves often wrinkle, the old leaves appear black-brown spots along the leaf edge from the tip of the leaves, and the leaves turn yellow around them, while the middle part and the pulse of the leaves are still green, which means that the flowers are lack of nutrition and need to be fertilized. Can increase the application of plant ash, 1% 2% potassium chloride aqueous solution (bulbs and flowers are prohibited), 0.30%-0.50% potassium nitrate aqueous solution as extra-root topdressing, or inorganic fertilizers such as potassium phosphate.

Lack of calcium tender leaves green and wrinkled, leaf edges curled and white stripes, flowers blocked, new leaves difficult to expand or diseased distortion means that flowers lack nutrition and need to be fertilized. Can sow or on the pot before the first half of the month, apply an appropriate amount of calcium chloride in the soil, can play the effect of calcium and (like acid flowers do not use), calcium nitrate can also be used as topdressing.

The plant growth is not exuberant. The old leaves gradually turn green and white from the edge of the leaves to the center, and there are all kinds of spots on the veins. The yellowing of the whole leaves indicates that the flowers lack magnesium and need to be fertilized. 0.20% 0.40% magnesium sulfate aqueous solution can be sprayed 3-4 times in a row, each time at intervals of 7 to 10 days. Soils with severe magnesium deficiency were mixed with 5-10 kg magnesium sulfate per mu and mixed with base fertilizer in autumn or winter.

The young leaves yellowed from the veins until the whole leaves yellowed, and the abnormal root development showed that the flowers lacked sulfur and needed to be fertilized.

Iron deficiency ranges from tender leaves to yellowing of old leaves. The prevention and control methods of sulfur deficiency and iron deficiency can be sprayed with 0.30% ferrous sulfate solution for 3 times in a row, each time with an interval of 1 week. At the same time, 0.20% urea hot metal solution can be used for extra-root topdressing.