In the autumn, the open field parsley is planted into the peak season. The current management of coriander focuses on “three defensesâ€.
The cilantro that is riddled in the autumn open field, although it will not be twitched due to the low temperature in the seedling stage, will be twitched due to the long-term sunshine (conditions) in summer and autumn, which requires the selection of cilantro-resistant coriander varieties in production. In addition, strengthen the management of fertilizer and water (the whole growth period of coriander should be poured with small water spray vegetables and strong stems 5 to 7 times, the first three waters, watering and spraying vegetables every 10 days or so, from the fourth water every 6 ~ 7 days watering and spraying vegetables and strong stems once. When pouring water, lightly pick up the seedling fertilizer, apply about 10 kg of urea per mu, and then pour urea once every 2 to 3 times, 10 to 12.5 kg per mu) Spraying a new high-fat film 800 times once can reduce the occurrence of convulsions.
Anti-"red stalk" coriander "red stalk", that is, the stem and leaf part of coriander changed from green to red, which reduced the commercial value of coriander, and the purchase price was halved. In the autumn, the coriander grown in the open field will be reddened by strong light, especially when the seedlings are too late (plant height exceeds 8 cm). In order to prevent the emergence of "red stalks" in coriander, one is early seedlings, and each time a seedling is sprayed with a new high-fat film. In the production, the seedlings should be as long as 3 cm high, and the plant spacing after the seedlings is kept at 2 cm. The second is to cover the sunshade net. If it is conditional, it can be used to make a scaffold with a height of 80-100 cm after sowing. The shed is covered with a shade net.
Rainproof autumn, when there is more rain, it is very harmful to the coriander seedlings just after emergence. After the heavy rain, it will suddenly turn fine, which will easily lead to the bad heart of the parsley. After the rain, lightly pour the water again, the amount is not to submerge the seedlings, spray a new high-fat film once, can prevent the coriander rotten heart.
In the "three preventions" period, the timely use of vegetables Zhuangshenling, new high-fat film can make the plant stems thick, the leaves are thick, the leaves are fresh and tender, the plants are flourishing, and the natural taste is strong. At the same time, it can improve the ability to resist disasters, reduce the amount of pesticides and fertilizers, and reduce residual poisons.
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