After the spring season, the temperature rose, chinese medicine and white art entered the budding stage, many growers consulted, and how did white art management take place in february, particularly in response to the effects of white magic weeds
I. Details that are easily ignored and have a direct impact on production
After a winter windstorm and the destruction of the hungry bird herds, many white-screech fields are exposed to white-screeching soil, some of which are not fully surfaced, but are overstretched, while the coming use of herbicides exposes the pharmacist to seedlings and even directly endangers white-screech seedlings, which in their infancy are susceptible to drug abuse, with serious consequences for normal white-screech growth and production, and are too shallow, even without herbicide harm。
As a rule, white seeds should cover more than 3 cm, so that whites can resist winter temperatures, and whites grow roots and grow strong over the long term. Controlling the time spent on herbicides before seedlings are produced does not harm white seedlings。
Therefore, prior to the use of herbicides, it is necessary to check the white fields for any of the above-mentioned phenomena and to find problems in re-covering them with agricultural tools in a timely manner, a link that is most likely to be neglected by growers, especially by new growers。
Ii. Closure of weeding is crucial, but details are difficult to grasp
Before white magic sprouts, weeding for white arts fields is the most important step in field management, and since there are no special herbicides for special effects for long periods of time, weeding before white sprouts becomes a top priority。
Closed herbicides such as dichloride, isopropachlor, precision alachlor or medrin are no stranger to closed herbicides, but the problem is that in the past two years, many white farmers have given feedback on why the same herbicides, the same amount of drugs, the same mouths, the same spraying methods have had different effects and even the effects of the drug
What else do you need to know behind what appears to be a simple application
1. Mastery of application formulas: in order to achieve a good closed herbicide effect, many white art growers tend to increase their use of drugs, such as 330 g/l of acetate, with 100-150 ml per acre for normal use and up to 600 ml per acre for use, which is highly unscientific, increasing the cost of application as well as increasing the risk of white art seeding。
The scientific method of improving the efficacy of the drug is to improve the closure effect by mixing the herbicides into each other, so that advantages can be complemented and the short sheets removed, thereby enhancing the effect of the closed weeding. The main seals, like dichloride, isopropachlor, butrin, etc. Undergraduate weeds are predominant, while ethyl fluoride is dominated by closed broad-leave weeds, and therefore the scientific mix of the two closed herbicides achieves a perfect complementarities。
2. Access to medication: the timing of the application is the key to determining the safe closure of herbicides. For the last two years, in pursuit of the closure effect, many farmers are making random blends of herbicides or failing to choose the timing of the application, leading to undesirable resistance or negative effects such as the exposure of white child seedlings to medication。
In the hwang cai sea region, the white technique was seeded in mid-march, while in much of the north of the yellow river it was postponed until mid-march, and in parts of the north-west, such as shanxi gansu, it was due in april。
The use of closed herbicides can be justified only if the specific time at which the white technique is produced is known, and if the application time is too early, the herbicide is too early to have herbicide effect, and if it is used too late (proximate to gushing, or even subsequent application), it can have a detrimental effect on the whitecrop。
When weeding is carried out in particular with mixed, closed herbicides, the greater the risk of the harmful effects of drugs, sometimes irremediably and irreversibly, which must be given special attention by farmers ' friends, if they are too close to seeding time。
The optimal application time should be 30-20 days before the white technique, which is known as the “gold application period”. Pure application of dichloride, altino, etc. May be appropriate 10-20 days before the white technique。
3. Mastering existing weed and cure techniques
During the white closed weeding season, winter weeds, such as weeds such as weeds, pigs, cats' eyes, pickles, etc., are indestructible. If weeds are not removed by artificial weeding, we can add ammonium or glycerine to the closed herbicide, e. G. 20 per cent of herbium 200/30 kg water or 62 per cent of herb glycol 200/20. If weeds are too small, they can be sprayed with herbicides, followed by herbicides。
Iii. Three key factors affecting the closed herbicides cannot be ignored
1. Application techniques: the application of closed herbicides, which must ensure a sufficient quantity of water, rather than a sufficient quantity, are two distinct concepts, and there are clear differences in the effectiveness of the response。
330 g/l 2 acetylene per 667 m2 field episode 100-150 ml, diluted by 60 kg of water, followed by an even spray on the soil surface so that the water use can be doubled if the soil is too dry。
2. Application weather: climate factors are one of the main factors affecting the effects of closed herbicides, such as the fact that the soil is too dry and inappropriately applied, and that, in case of arid weather, especially arid fields, in addition to increasing the amount of water used, can be sprayed after irrigation。
It is important that the weather following the application is equally important, such as the heavy rain weather following the application, which increases the probability of exposure of white child seedlings to the soil, and we therefore recommend that rain not recommend the application of closed herbicides, especially herbicides containing ethyl fluoride and ethylamide components, within a week。
3. Quality of application: it is important not to lose sight of the quality of closed herbicides themselves, as the same type of herbicide is not the same as in the factory, and the quality and price are not the same. It is therefore recommended that you go to the formal farm shop and purchase products that have had the best use in the past and be used rationally, under the guidance of agricultural technicians, in order to maximize the impact of prevention。
