This time, we invited Mr. Wang Yiming from Bayer to give lectures to everyone. This time, Mr. Wang focused on the cultivation of rice in Northeast China and related pharmacy knowledge.
"Northeast Rice Planting Situation"
The northeast region is an important production area for rice in China. The total planting area is about 77 million mu, of which about 7 million mu is live rice and about 70 million mu is transplanted rice.
Rice Fields
On the basis of large-scale planting, the high yield and high efficiency of rice is very important, and the value generated is also very impressive. We can understand the composition of rice yield through a formula:
Yield = number of effective panicles per unit ╳ number of grains per pan ╳ thousand grain weight 收回 recovery rate
It can be known from this formula that the reasons for the low yield generally are as follows:
The number of effective panicles per unit area is small;
The number of grains per ear is small, there are many empty grains, and there are many grains;
The weight of the thousand grains is low, the grains are not full, and the grains are light.
These factors are ranked according to the degree of influence on the final yield: number of grains > grain weight > number of ears. After learning about this, we further understand that rice yield constitutes the corresponding relationship between the three elements and the growth stages of rice.
Problems faced by various stages of rice growth
From the point of view of damage, the impact on rice yield is mainly divided into three types: grass damage, disease and insect damage, each of which will produce at least 20% reduction in production.
"Rice Control of Rice Seeds"
For the rice grass damage, we can use the following herbicides for weeding.
Here we introduce the new technology of malignant weed control. We can use the two-stage prevention method according to the paddy field: valerian, rice blast, red root rice, rain long flower, water cabbage; sage, scallions, and striated grass.
For the first stage of prevention and treatment, we can carry out the sealing treatment 3 to 7 days before transplanting. The medicines that can be used include Qiuzhibao, Dao Si Da, Xi Cao Jing, Wei Ding, etc.
After 10 to 20 days after transplanting, we can carry out the second treatment. The reagents include chlorpyrifos, bensulfuric acid, pyrithione, dichlorobenzene.
If there is residue and need to be remedied later, we can use 2 A · bentazone, penoxsulam.
"The prevention and control of stem borer and strong roots and stalks"
While ensuring the effective number of tillers, we must control the occurrence of ineffective tillers as much as possible to prevent excessive density, reduce the occurrence of sheath blight and waste of nutrients, and at the same time strengthen the roots and stalks.
Drainage of the field at the end of the effective tillering, to achieve the effect of controlling the invalid tiller. Generally, for 12 leaf varieties, the irrigation was suspended and sun-dried on July 1, and the irrigation was resumed after July 7, so that the total number of stems reached 620 plants/m2.
During this time, it is also important to control the stem borer. For 12 leaf varieties, on July 5, Youfu can be evenly sprayed with a dose of 6~8 g/mu. On July 28th, use Yufukuan again. For the reproductive characteristics of Chilo suppressalis, we need to hit the lower stalk of rice.
At this stage, attention should also be paid to the lodging resistance of rice. According to rice growth and meteorological conditions, anti-falling measures should be taken when necessary.
"Northeast rice disease prevention and production increase measures"
In the early stage of rice jointing to filling, our important work is to protect the last 4 leaves of rice and rice grain to ensure maximum rice yield.
Northeast rice belongs to non-accumulation type, and the last 4 leaves are the key factors for yield. The contribution of the last 4 leaves to yield is:
Flag leaf: 52%
Pour 2 leaves: 22%
Pour 3 leaves: 7.7%
Inverted 4 leaves: 17.7%
The impact of the last 4 leaves on yield is over 99%, and the importance is self-evident. Through research and investigation, taking enemy stability is a good agent to prevent and cure diseases in the middle and late stages of rice. Here, I will introduce you to the use of the enemy.
There are generally three periods of application: the closure period, the end of the booting stage, and the heading stage. We can choose the first two or the last two periods to apply the medicine. At the end of the sealing period and the end of the booting stage, we mainly prevent leaf mites, sheath blight, panicle neck lice, rice false smut; apply at the end of the booting stage and at the heading stage. The main prevention and prevention of rice false smut, ear stalk, branch stalk, and sputum.
Take the amount of the enemy, usually 15 grams / acre, if the rice blast occurs on a large scale, we can use 20 grams / acre.
In the spray operation, if artificial spray is used, the water should be exchanged at a dose of 10~20 kg/mu; the aircraft operation should be watered at a dose of 1.3~1.5 kg/mu. Take the enemy to stabilize the morning and evening with dew to fight drugs. When you take the medicine, it is best to soak the medicine for 3-5 minutes and mix well, then spray it.
Thanks to Wang Yiming for his wonderful knowledge sharing. In the next cloud class, we invited the fat manager of the plant protection system to explain how to solve the problems that may be encountered in the plant protection drone operation and teach some practical skills. Interested guys at 17:00 on August 17th, remember to come to class on time.
"Northeast Rice Planting Situation"
The northeast region is an important production area for rice in China. The total planting area is about 77 million mu, of which about 7 million mu is live rice and about 70 million mu is transplanted rice.
Rice Fields
On the basis of large-scale planting, the high yield and high efficiency of rice is very important, and the value generated is also very impressive. We can understand the composition of rice yield through a formula:
Yield = number of effective panicles per unit ╳ number of grains per pan ╳ thousand grain weight 收回 recovery rate
It can be known from this formula that the reasons for the low yield generally are as follows:
The number of effective panicles per unit area is small;
The number of grains per ear is small, there are many empty grains, and there are many grains;
The weight of the thousand grains is low, the grains are not full, and the grains are light.
These factors are ranked according to the degree of influence on the final yield: number of grains > grain weight > number of ears. After learning about this, we further understand that rice yield constitutes the corresponding relationship between the three elements and the growth stages of rice.
Problems faced by various stages of rice growth
From the point of view of damage, the impact on rice yield is mainly divided into three types: grass damage, disease and insect damage, each of which will produce at least 20% reduction in production.
"Rice Control of Rice Seeds"
For the rice grass damage, we can use the following herbicides for weeding.
Here we introduce the new technology of malignant weed control. We can use the two-stage prevention method according to the paddy field: valerian, rice blast, red root rice, rain long flower, water cabbage; sage, scallions, and striated grass.
For the first stage of prevention and treatment, we can carry out the sealing treatment 3 to 7 days before transplanting. The medicines that can be used include Qiuzhibao, Dao Si Da, Xi Cao Jing, Wei Ding, etc.
After 10 to 20 days after transplanting, we can carry out the second treatment. The reagents include chlorpyrifos, bensulfuric acid, pyrithione, dichlorobenzene.
If there is residue and need to be remedied later, we can use 2 A · bentazone, penoxsulam.
"The prevention and control of stem borer and strong roots and stalks"
While ensuring the effective number of tillers, we must control the occurrence of ineffective tillers as much as possible to prevent excessive density, reduce the occurrence of sheath blight and waste of nutrients, and at the same time strengthen the roots and stalks.
Drainage of the field at the end of the effective tillering, to achieve the effect of controlling the invalid tiller. Generally, for 12 leaf varieties, the irrigation was suspended and sun-dried on July 1, and the irrigation was resumed after July 7, so that the total number of stems reached 620 plants/m2.
During this time, it is also important to control the stem borer. For 12 leaf varieties, on July 5, Youfu can be evenly sprayed with a dose of 6~8 g/mu. On July 28th, use Yufukuan again. For the reproductive characteristics of Chilo suppressalis, we need to hit the lower stalk of rice.
At this stage, attention should also be paid to the lodging resistance of rice. According to rice growth and meteorological conditions, anti-falling measures should be taken when necessary.
"Northeast rice disease prevention and production increase measures"
In the early stage of rice jointing to filling, our important work is to protect the last 4 leaves of rice and rice grain to ensure maximum rice yield.
Northeast rice belongs to non-accumulation type, and the last 4 leaves are the key factors for yield. The contribution of the last 4 leaves to yield is:
Flag leaf: 52%
Pour 2 leaves: 22%
Pour 3 leaves: 7.7%
Inverted 4 leaves: 17.7%
The impact of the last 4 leaves on yield is over 99%, and the importance is self-evident. Through research and investigation, taking enemy stability is a good agent to prevent and cure diseases in the middle and late stages of rice. Here, I will introduce you to the use of the enemy.
There are generally three periods of application: the closure period, the end of the booting stage, and the heading stage. We can choose the first two or the last two periods to apply the medicine. At the end of the sealing period and the end of the booting stage, we mainly prevent leaf mites, sheath blight, panicle neck lice, rice false smut; apply at the end of the booting stage and at the heading stage. The main prevention and prevention of rice false smut, ear stalk, branch stalk, and sputum.
Take the amount of the enemy, usually 15 grams / acre, if the rice blast occurs on a large scale, we can use 20 grams / acre.
In the spray operation, if artificial spray is used, the water should be exchanged at a dose of 10~20 kg/mu; the aircraft operation should be watered at a dose of 1.3~1.5 kg/mu. Take the enemy to stabilize the morning and evening with dew to fight drugs. When you take the medicine, it is best to soak the medicine for 3-5 minutes and mix well, then spray it.
Thanks to Wang Yiming for his wonderful knowledge sharing. In the next cloud class, we invited the fat manager of the plant protection system to explain how to solve the problems that may be encountered in the plant protection drone operation and teach some practical skills. Interested guys at 17:00 on August 17th, remember to come to class on time.
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