Lettuce stem treatment method
Lettuce stalk severely affects the quality of lettuce, and many vegetable farmers often fail to effectively prevent the slicing of the slicing stalk, resulting in serious economic decline. In order to improve the quality of lettuce and reduce the loss of vegetable farmers, the causes of cracking stems and preventive measures are briefly described as follows:
Causes of cracked stems occur in the harvest period. There are many reasons for this:
First, it is related to water and fertilizer. The supply of water and fertilizer is uneven, and the drought suddenly occurs. Especially when the fleshy stems mature, the outer skin has been lignified. At this time, a lot of water is poured, and the fleshy stems inflate suddenly. The epidermis cannot be enlarged and split.
Second, the climate is uneven;
Third, under the condition of deficiency of boron, the content of vitamin C in lettuce was reduced, the plant's resistance to stress and disease resistance decreased, and the fleshy stalks were easily cracked.
Fourth, the harvesting period of lettuce is too late and it is easy to cause cracks, which makes its quality drop.
Preventive measures First, strengthen fertilizer and water management. The management focus is when the lettuce leaves and the rosette leaves are flat, their stems begin to swell, small water should be poured, and 8-10 kilograms of instant fertilizers can be applied to each foliar, and polyboron 1500 times liquid can be sprayed on the leaves. Note that this time the water and fertilizer must be timely, too early or too late for the growth of the fleshy stem. After starting watering, the speed of stem enlargement is accelerated, the water and fertilizer are increased, the ground is slightly dry, the watering is even, the amount of water must be moderate, and flooding should be strictly prevented. When the land is able to enter people, shallow loose soil is broken and combined with watering, and fertilizer is applied 1-2 times. Spraying poly-boron 1500 times once can prevent stem cracks from appearing. Second, timely harvest. When the top of the main stem of the lettuce stem is flat with the tip of the tallest leaf, it is suitable for harvesting. At this time, the fleshy stem has been fully expanded, the quality is crisp, and the cracked stem is not easy to appear.
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