Three points for autumn green onions
After the beginning of autumn, the temperature dropped, the growth of autumn onion plants accelerated, and the fast-growing white light was a critical period for the formation of yield. The key point of field management is to cultivate soil as the core. Here are the technical points of soil cultivation.
First, grasp the right time
When welsh onion height is about 30 centimeters when soil is cultivated, the soil is first cultivated in mid-August, followed by earthing once every 15 days, and continuing until mid-September. The entire growth period requires soil 3-4 times.
Second, avoid injury and damage the leaves
When taking the soil, the bread should be kept at a proper distance from the onion root system so as not to damage the root system. Generally, earthing is selected at 4-6 pm in the afternoon. The onion leaves are soft and are not easily damaged by machinery. Every time the earth is to be kept, the stems and leaves of the green onion should be kept upright. Don't let the earth not pass through the heart, or it will easily cause the light blue and the leaves to rot. When soil is cultivated, the soil on both sides of the onion ridge should be photographed to prevent it from falling due to watering or rain.
Three, balanced with top dressing
It is best to combine topdressing with each soil. Welsh onion is a kind of vegetable with higher yield. In addition to applying the base fertilizer, the top dressing with reasonable ratio can obviously increase the output of Welsh onion and improve the quality. For the first time, Mu applied 50 ton of cooked bean cake and 20 to 20 kg of urea. Early application of nitrogen fertilizer can promote the robust growth of stems and leaves, lay the foundation for high yield; the second time is the rapid development period of light blue and white, and the top of the crop is the maturity of pods. 100 kg of cake fertilizer and 30 kg of NPK compound fertilizer can meet the comprehensive nutritional needs; the third application of 30 kg of calcium nitrate in the earth can be used to promote light blue growth, thicken the plant, and prevent the occurrence of soft rot.
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