Corn seedlings seeding simulcast notes

With the sowing of corn stubble and the expansion of the area under the fertilizer, some problems in production have gradually emerged and should be brought to the attention of farmers' friends.

1, do not use urea with the kind of fertilizer.

The corn planter is now using only about 5 centimeters of stumps and the lower parts of the fertilizer under the corn planter. The fertilizer sown with the seed should be selected with high-quality compound fertilizer or diammonium plus potash, and urea should be avoided as much as possible. The total amount of fertilization should not exceed 25 kg per acre to prevent the phenomenon of seed burning after watering and heavy rainfall. In recent years, there have been cases where seedlings are burned with different kinds of fertilizer. Farmers' friends should pay close attention.

2, watering time should be strictly controlled.

“Spring competition, summer competition.” Earlier harvesting of wheat after harvest has a lot of benefits on the growth and high yield of corn, but if there is a water shortage in 3 to 4 days after sowing, the seed will have The danger of "buds drying out" is especially noticeable in those plots that are slightly inferior in terms of plague, but that can germinate seeds but are not enough to make the seeds sprout.

The situation of re-seeding and sowing each year due to "bud drying" has also occurred from time to time. Therefore, farmers' friends should plant seeds as timely as possible according to their plot's lyricism and local water conditions.

3, do a good job sun seed and pesticide seed dressing.

In recent years, the occurrence of pests and diseases in corn seedlings has been aggravated and species have increased. In addition, corn seeds of some seed companies have not been coated, and some farmers have shown that the purchased corn seeds are neither sunned nor seeded, resulting in seeds. After sowing, it was harmed by earthworms and other underground pests, resulting in lack of seedlings and ridges. In addition, after the wheat machinery harvested, there were many wheat straws in the field, and the wheat ridge was severely covered. It was very troublesome to transplant the seedlings and make up the seedlings. Therefore, peasant friends try to buy the coating seeds of regular enterprises when they purchase the crops. Good seed coating agents contain both pesticides and fungicides as well as some regulators that stimulate seed germination.

If the purchased corn seed is uncoated, insecticides such as ground pests, seedling blight, and other pests of the plant, such as Laodelphax striatellus and Thrips, should be applied. 20 grams of imidacloprid and 50% of phoxim are used per 50 kg of corn seed. Emulsion 100 grams of water 2 ~ 2.5 kg and mix well, heap stuffy 4 to 6 hours, slightly dry and stir in 100 grams of 50% carbendazim to sow.

4, herbicides and pesticides with a reasonable match.

At present, the closed herbicides such as ethylene, dibutyl, and metolachlor used in production and the postemergence herbicides such as Yubao and Yuhuang Earth should not be mixed with organophosphorus pesticides. If used, the interval should be longer than 7 days, otherwise it is easy to cause injury and reduce the weeding effect.

Before and after corn sowing, it is susceptible to the damage of the armyworm. In order to achieve a multiple spraying, reduce the number of field applications, and achieve the purpose of weeding and killing insects, herbicides can be mixed with pyrethroids such as fenvalerate and marjoram and other pyrethroids. spray. When applying pre-emergence hermetic herbicides, care should be taken to reverse the spraying and increase the amount of water used. Because this year's wheat population is larger than in previous years, the wheat stubble in the field is high, and wheat straw is thick. Therefore, sufficient water should be used to ensure the integrity of the film layer during spraying, and the effects of weed control and pest management should be enhanced.

Tetrabromobisphenol A CAS No.79-94-7

Tetrabromobisphenol A Basic Information
Product Name: Tetrabromobisphenol A
CAS: 79-94-7
MF: C15H12Br4O2
MW: 543.87
EINECS: 201-236-9
Mol File: 79-94-7.mol

Tetrabromobisphenol A Structure

tetrabromobisphenol a,tetrabromobisphenol a msds,tetrabromobisphenol a (tbbpa),tetrabromobisphenol a bis (2 3-dibromopropyl ether),tetrabromobisphenol a bis

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