The fourth control technology of greenhouse vegetables-fertilizer control

Why do greenhouse vegetables grow too long? The important thing is that the following two balances are not good:

The first balance is the balance between above-ground and below-ground vegetable growth.

The second balance-the balance of long seedlings, long flowers and long fruits in greenhouse vegetables.

To adjust the two balances of greenhouse vegetable growth with fertilizers, the following three aspects should be done:

1. Promote root control and prosperity: Promoting root control and prosperity is a fundamental method of controlling prosperity. The fertilizer used in fertilizer control technology is not a large amount of element fertilizer, but is a root fertilizer, organic fertilizer, such as humic acid, chitin, fish protein, amino acids, and biological bacteria. Promote balanced growth of greenhouse vegetable roots and seedlings of greenhouse vegetables.

2. Promote flowers and fruits: Adjusting the balance of long seedlings, long flowers, and long fruits in greenhouse vegetables is to adjust the balance of vegetative and reproductive growth of greenhouse vegetables.

Boron can help the pollen tube stretch and help sit flowers.

Calcium can prevent rotten fruits and cracked fruits from appearing in the vegetables in the greenhouse.

Silicon can increase the number and quality of female flowers in greenhouse vegetables, and increase the vitality of pollen.

Applying seaweed fertilizers to the roots and leaves of vegetables, and applying small element fertilizers such as boron, calcium, zinc, iron, and silicon to turn the nutrients absorbed by vegetables in greenhouses into long flowers and long fruits, promote the fruits and vegetables in greenhouses, The fruit can fall into the seedlings and realize the control of the strong elders.

3. Grasp the timing of fertilization

The timing of fertilization is 12 words: "Boron before flowering, calcium after flowering, silicon for flowering." Before the vegetables in the greenhouse have bloomed, or the flowers have not bloomed, we will go to boron; When the vegetables in the greenhouse have finished blooming, but we have n’t set or expanded the fruit, we go to add calcium; when the vegetables in the greenhouse have no flowers, we need to add some silicon fertilizer in time. In the flowering period of greenhouse vegetables, there were more female flowers in greenhouse vegetables applied silicon fertilizer.

It is necessary to add boron before flowering, add calcium after flowering, and add silicon to flower, so that the vegetables in the greenhouse can sit on the flower, keep the fruit, and fall on the seedling, and control the prosperity.

The fifth control technology of greenhouse vegetables-drug control

At the seedling stage, we must first do light control; after planting, we must first do temperature control, water control and fertilizer control. After using the above 4 kinds of control technology, the vegetable in the greenhouse is still strong, and we use drug control (chlormequat chloride + paclobutrazol or Mepiquat chloride water solution). If the drug control is not done well, greenhouse vegetables will have a series of problems such as premature aging of the seedlings and damage to the root system.

Medication Control Wang recommends that you do the following 2 points:

1. The method of medication is 8 words: "Cover the top spray and swipe away."

(1) "Cover spray" is to apply medicine to the growing point. Don't fill it with seedlings from top to bottom. Manyangzi control medicine will control the fruits and vegetables in the greenhouse.

(2) "Sweep by" means do not repeat and apply the medicine back and forth. Once the control medicine is sprayed too much at one time, it will easily lead to loss.

2. The timing of drug control.

In our vegetable greenhouse, the vegetables enter the flowering period. When nearly 1/3 of the vegetables are blooming, we must take the initiative to control the growth, so that the vegetable in the greenhouse grows from nutrition to overproduction. Let's go to control again, then it's too late.

Man-made control of greenhouse vegetables

The artificial control mentioned here is usually pruning and pruning.

1. Artificial control methods such as greenhouse eggplants.

The pruning method of eggplants in greenhouses is double-rod pruning, and the faucet grows with two heads. If one faucet grows too strong and the other faucet grows too weak, we must kill the strong faucet, use the side branches under the strong faucet to change heads, wait for the weak branches, and let the double branches grow in a balanced way to control the growth.

3. Artificial control methods such as greenhouse grapes.

The artificial control method of grapes in the greenhouse is topping. In general, we want to toast when the grapes in the greenhouse reach 7 to 8 leaves; some greenhouse grape varieties grow strong and need to be torn before flowering.

Zhengzhou Delong Chemical CO., Ltd. is the production base of plant growth regulators in China, which established in 2009, specializing in offering plant protection products. If you have any question, contact us any time.