Generally speaking, the green onions cultivated in open field are generally planted in summer and harvested in autumn. If you want to provide green onions all year round, you can use the cultivation mode of greenhouses and solar greenhouses. Here's a simple study of the planting points of the green onions in the greenhouse.
Variety selection
The onion-cultivated green onion varieties should be selected as drought-tolerant, cold-tolerant, and highly adaptable, such as Chinese green onions, Zhangqiu green onions (high-footed white) or local farmer species.
2. Transplant management
Before transplanting the onion, the bottom fertilizer should be applied first. Generally, every 667m2, the farmer's fertilizer is 6,000 kilograms, the phosphate fertilizer is 30 kilograms, and the ternary compound fertilizer is 50 kilograms. A small part of the base fertilizer will be applied. The ditch will be applied. In addition, please note that the size of the seedlings can not be mixed, first grade the good.
The green planting can be properly planted, the row spacing is 60-70cm, the plant spacing is 3~4cm, and the onion is listed. The row spacing is 80cm and the plant spacing is 5cm. After transplanting, it is necessary to cultivate the loose soil in time, flat ridges, break the knot to promote root growth, and combine the sprinkling water to apply the quick-acting NPK compound fertilizer, apply 667 square meters of 30 kg, and timely cultivate the soil according to the growth of the seedlings to promote the onion white composition.
3. Pest control
The main underground pests are mainly cockroaches, crickets, onions, etc.; the onion diseases mainly include rust, purple spot, downy mildew, gray mold, black spot, etc.; the ground pests mainly include cabbage caterpillars, onion thrips, and leaf miners. , Starscream, etc.
The onset of onion is generally in the middle of April to early June and early September to early November. The larval stage can be rooted with 50% phoxim emulsifiable concentrate 1000 times solution, and the effect is very good.
The control of onion thrips and leaf miners can be sprayed with 50% dimethoate 1000 times solution or phoxim 1000 times solution, killed 毙 4000 times solution, and fast killed 1500 times solution. The control red spider is sprayed with a 1000-fold liquid. The drug was stopped 10 days before the harvest.
4. All-in-one sowing time and harvesting time of onion cultivation
From November to March, it is cultivated in a simple solar greenhouse, spread flat, and listed in March to May.
In the middle and late 23rd of the month, the small arch shed was cultivated, flattened and spread, and in June, Xiaoqing Cui was listed. It can also be transplanted in mid-June and harvested in October or November.
In the first half of October, the fields were cultivated and nursed, and in mid-to-late June, the plants were transplanted in a wide area, and the open fields were overwintered. The flower buds were removed from March to April of the next year, and the green buds were listed from April to May.
From 47 to August, the seedlings were cultivated, transplanted from the beginning of September to November, densely planted (plant spacing 3cm), the winter was exposed, the flower buds were removed from March to April of the next year, and the green buds were listed from May to July.
In mid-to-late May, the seedlings were cultivated, and the seedbeds were exposed to winter. In the following year, Xiaoqingcui was listed in March-April.
In the middle and late 69th of the year, the seedlings were cultivated, transplanted in mid-April, and harvested from July to August, or transplanted in June, and harvested from October to November.
It will be cultivated in the solar greenhouse from late August to early September, and will be shacked in mid-October, and will be listed in December from December to February.
The above is all the contents related to the cultivation of green onions today. In addition, everyone should pay attention to the cultivation of green onions should not be heavy, otherwise it will seriously affect the output value. If it is cultivated heavily, it is necessary to treat the soil.
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