The two wings of the Xiaolong River in Gaoyang County have a flat topography, deep soil layers, and sandy soil. They are suitable for root tuber growth of Ma yam and have relatively high economic value. They are the main source of income for some villagers along the river, but there are a few varieties of the plant. Big misunderstandings have become the main factor that restricts the increase in production and income of Mashan. I. Mistake selection Farmers tend to focus on immediate benefits only when they choose their seeds. They are used to selecting good quality and even tubers for sale, leaving them as secondary, malformed and diseased tuberous root tubers. The income of the current year may be higher, but after the second and third years, the diseases and pests will increase, the deformed roots and tubers will increase, and the yield and quality of yams will decline, which will reduce the benefits. Therefore, yam should be selected uniform, orderly, disease-free tubers, and need to be replaced by 4 to 5 years, in order to reduce the degradation of plant varieties due to the occurrence of successive years. Second, fertilization misunderstanding According to the survey, the farmers fertilize nearly 800 yuan per mu input, investment is increasing, but the output did not increase. Chicken manure as a base fertilizer was originally conducive to the growth of yam, but most of the chicken manure applied by farmers was not completely decomposed, resulting in an increase in the number of underground pests. During its decomposed process, it competed with yams to compete for fertilizer and compete for water, sometimes causing burning seedlings and causing seedlings to sprout. The weak seedlings have aggravated the occurrence of pests and diseases, and have adversely affected the growth of yams. The yam is completely converted by itself to transport nutrients until mid-June. At this time, the fertilizer effect of fertilizer has been almost lost. The experiment found that chemical fertilizers were not used as base fertilizers but instead applied topdressing, that is, they were chased three times in late June, late July, and mid-August, respectively, and they were compared with the base fertilizer and the two top dressings in mid-July and mid-August. Only the production of topdressing is rather high. Therefore, the application of organic fertilizer as a base fertilizer is applied once. Fertilizer can be applied. Each recovery of 20 kg of diammonium, 25 to 30 kg of potassium sulfate, slow-release fertilizer can be used as a base fertilizer. Third, the use of drugs misunderstanding farmers often spray more drugs plus less water, in fact, this is the most taboo in the prevention of pests and diseases. First, the drug concentration is high, it is easy to produce phytotoxicity, the second is the use of drugs, the cost is increased, and the third is because the liquid is small, it is easy to cause uneven spraying, resulting in poor control effect. Blind drug use is also a big problem in the production of yam. Under normal circumstances, a variety of diseases are often mixed. Some plots emphasize the disease. Some plots are dominated by the disease. Farmers are often too predominantly mental to see what other people use. They also use What medicine, whether symptomatic or not. The second is repeated drug use. There is "empiricism" in drug use. Last year, it was possible to use certain medicine effects. This year, regardless of weather conditions and disease types, this medicine was used every time from the seedling stage. The result was a lot of money, but the effect was not ideal, and even the condition worsened, resulting in reduced production. This is also the main reason for the low profit of planting yam in recent years. The correct method of drug use is: After the onset of illness, consult with the local plant protection department to determine what kind of pests and diseases, and then prescribe the symptoms. When the concentration of the drug is appropriate, different pesticides can be alternately used, which can not only improve the control efficiency, but also reduce the cost. Fourth, the control of misunderstandings should be controlled from the beginning of the spraying of methazole or chlorpheniramine to the second “chrysanthemum topâ€. The interval between the two starts is 15 days or so, and it should be sprayed once every 10 days according to the growing trend. , to the end of August at the end of September. In this way, the stems and leaves can be grown without prosper, and higher yields can be obtained. Most drug farmers, however, wait until the stems are full of crates, and when the shoots are twisted and twisted into twists, they begin to control. When spraying, it is not to spray the young part separately, but to spray the whole plant. It is customary to use it in combination with other pesticides. It is easy to form turf on the ground and the growth of underground tubers is not good, resulting in low yield and poor efficiency. (Gaoyang County Agriculture and Animal Husbandry Bureau 071500)
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