What is a continuous obstacle? How is the effect of cucumber rotation?

This is the case with vegetables. Basically, there are continuous cropping obstacles in various vegetables. If the obstacles are severe, it will lead to production. So what about the effect of the rotation? What are the vegetables that can be made with cucumber?

什么是连作障碍?黄瓜怎么轮作效果才好?

First we need to know what is a continuous obstacle

The facility has a single variety of vegetable cultivation, high multi-population index, and highly intensive management, resulting in deterioration of the soil environment of the facility. The specific performance is the lack of certain elements, soil acidification and soil salinization, and the organic acids and toxic substances secreted by vegetable roots cannot be timely. Elimination, so that when the same plot or the same crop is continuously planted in the same plot, it will show that even if the management technique is good, it will grow poorly, the yield and quality will be reduced, and the pests and diseases will be particularly serious. This is the continuous cropping obstacle.

Therefore, our production requirements, especially the facilities for growing vegetables, must pay attention to the shacks for sheds and soil disinfection, and vegetable rotation. Cucumber is the first or second vegetable variety in the vegetable cultivation area. If the cucumber is planted in the same shed for 3-5 consecutive years, it will show a serious continuous cropping obstacle, mainly root-knot nematode, even if it is applied to avermectin. The effect of high temperature suffocation is not too good, and then the self-toxic effect of cucumber makes the yellow stagnation worse.

Last year, we visited several major cucumber producing areas. We have a lot of sheds in Guantao, Wuyi, Yongqing, etc. in Hebei. The first impression is that the continuous cropping obstacles of cucumber are very serious. The vegetable farmers have no idea how to solve this problem. I only know how to use medicine, big water and big fertilizer, but I don’t realize that improving soil is a very important thing. For various reasons, the rotation is not taken seriously, and it is not good to know how the crops will work with those crops.

什么是连作障碍?黄瓜怎么轮作效果才好?

Now I mainly introduce these three crops which are better for cucumber rotation.

1, green onion - cucumber rotation

Scallions are very suitable for rotation vegetables. Its leaves can emit spicy odor. The roots secrete bactericidal substances. Both of them can kill and inhibit the bacteria in the soil and air. Therefore, the greenhouse should have a variety of green onions, which can be rotated or Intercropping, the common mouthwash is arranged in this way. The green onion is planted in the greenhouse at the bottom of the 8th. It is harvested and listed at the beginning of January. After that, the winter and spring cucumbers are planted, the cucumbers are listed in the Spring Festival, and the bamboo is pulled in July, so that there is more than one month of turf time. .

2, glutinous corn - cucumber rotation

The reason why corn rotation is chosen is mainly because corn consumes a lot of nitrogen and can absorb excess nitrogen in the soil, balance nutrients in the soil and improve soil structure. Rotating corn is generally selected as early maturing, sweet corn or waxy corn with a growth period of only 60 days. The corn will be broadcast in late June, and the corn growing season will end in mid-September. The cucumber will be planted at the end of September and will continue to pull until the end of April of the second year. After that, there will be more than two months of shed cleaning and stagnation time.

什么是连作障碍?黄瓜怎么轮作效果才好?

3, cowpea - cucumber rotation

The rotation effect of cowpea is not as good as that of green onion and corn, but it is worse than the rotation of the solanaceous fruit. The cucumber is usually used in the greenhouse to sow the kidney beans. The cucumber is planted for the wintering. It is planted at the end of September and arrives at the harvest period before and after New Year's Day. It lasted until July and August. The sowing of cowpea, if the cucumber premature aging can be planted in February, so that the cowpea began to harvest in April, reached the harvest peak in May, all pulled at the end of July, land preparation, shack.

The soil problem is now a problem for the facility to grow vegetables. Therefore, all of our vegetables must be taken seriously. I think everyone knows at least what is the continuous obstacle, how serious it is. Made with green onions and corn.

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