Insect growth regulators for the control of Plutella xylostella
The emergence of Plutella xylostella has seriously affected the growth of crops. Insect growth regulators and other pesticides are selected to completely eliminate Plutella xylostella. One can be sprayed with 10.8% pyridyl ether EC 800 to 1500 times, the second can be sprayed with 5% fluorouracil EC 30g 60ml to 30 jin of water, the third can be sprayed with 5% methylvitamin saline dispersible granules 5g to 30 jin of water, and the fourth can be sprayed with 6% Avi ·chlorobenzoyl suspension 30ml / mu, 60kg / mu with water, and the control effect can be as long as 15 days. The above different types of pesticides should be flexibly selected according to the actual conditions of various localities: first, we should pay attention to the use of drugs in the high incidence period; second, we should apply them in the low instar stage of larvae; third, we should cross-use drugs, and one variety of pesticides should not be used frequently.
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Function and Application of Organic Fertilizer
At present, of the total nutrient input of farmland fertilization in China, about 1 beat 4 of nitrogen, 1 of 3 of phosphorus, 80% of potassium and more than 90% of trace elements are solved by the application of organic fertilizer, which is an important basis for the sustainable development of modern agriculture. A large number of studies and practices show that organic fertilizer has comprehensive nutrients and long-lasting fertilizer effect. ...
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Timely spraying regulator to resist stress and increase yield of wheat
1. Paclobutrazol. Spraying 50 kg 200ppm paclobutrazol solution per mu at wheat jointing stage could dwarf plants and enhance lodging resistance and drought resistance. It can also treat powdery mildew and improve the absorption and utilization of nitrogen in plants. Second, Dwarf Zhuang Su. For large and prosperous wheat fields, use per mu at the jointing stage of wheat.
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