Chinese yam planting technology: what should be paid attention to in planting hemp yam?

I plan to plant Ma Yam, but what should I pay attention to when planting Ma Yam? Please give guidance on the new planting of yam need to pay attention to the following four points for reference. The main contents are as follows: 1. Pay attention to the selection of Chinese yam: farmers often only pay attention to the immediate interests when selecting seeds, and are accustomed to choosing good quality tubers and selling them evenly, leaving most of the inferior, deformed and diseased tubers for seed use. In doing so, the income may be higher in that year, but after the second and third year, the diseases and insect pests aggravated, the abnormal root tuber increased, and the yield and quality of yam decreased, resulting in lower efficiency. Therefore, yam species should choose uniform, neat, disease-free tubers, and need to be changed once every 4 to 5 years, in order to reduce the occurrence of degradation due to successive planting varieties. 2. Pay attention to fertilization in yam planting: according to the investigation, the input of farmers alone is nearly 800 yuan per mu, which is getting larger and larger, but the yield has not increased. Using chicken manure as base fertilizer is originally beneficial to the growth of Chinese yam, but the chicken manure applied by most farmers is not completely mature, resulting in an increase in the number of underground pests. In the process of ripening, it competes with Chinese yam for fertilizer and water, and sometimes burns seedlings, resulting in weak seedlings and aggravating the occurrence of diseases and insect pests. On the contrary, it has a negative impact on the growth of Chinese yam. Ma yam does not transport nutrients entirely on its own until after mid-June, when the fertilizer effect has been almost lost. It was found that chemical fertilizer was not used as base fertilizer, but topdressing, that is, topdressing was applied three times in late June, late July and mid-August, respectively. Compared with the mode of applying base fertilizer and two times of topdressing in mid-July and mid-August, the yield of only topdressing was higher. Therefore, in fertilization, the implementation of organic fertilizer as base fertilizer one-time application, chemical fertilizer topdressing on it. Each time, 20 kg of diammonium, 25 kg of potassium sulfate and 30 kg of slow release fertilizer can be used as base fertilizer. 3. Pay attention to the use of drugs in yam planting: in general, farmers often add more medicine and less water. In fact, this is the most taboo problem in the prevention and control of diseases and insect pests. First, the drug concentration is high, it is easy to produce drug damage, the second is to use more drugs, the cost is increased, and the third is because the liquid is less, it is easy to cause uneven spraying, resulting in poor prevention and control effect. The blind use of drugs is also a big problem in the production of Ma yam. Usually, a variety of diseases often occur in a mixture. Some plots pay more attention to this disease, and some plots are dominated by that disease, while farmers often have a heavy mentality of following the herd. When they see what medicine others use, they also use what medicine they use, regardless of whether it is right or not. In addition, there is "empiricism" in the repeated use of drugs. Last year, it was possible to use a certain drug, and this year, regardless of climatic conditions and types of diseases, this drug was used every time since the seedling stage. As a result, a lot of money was spent, but the effect was not ideal, and even the illness worsened, resulting in a reduction in production. This is also the main reason for the low efficiency of planting Ma Yam in recent years. The correct method of medication is: after the onset of the disease, first consult the local plant protection department or the land network to determine what kind of diseases and insect pests, and then prescribe a prescription for the disease. When the concentration is suitable, different pesticides can be used alternately, which can not only improve the control effect, but also reduce the cost. 4. pay attention to the use of regulators in yam planting: regulators should be sprayed with paclobutrazol or trimethoprim from the majority of Mashan vines to the second "chrysanthemum top". The first two times are about 15 days apart, and then they should be sprayed every 10 days according to the growth trend. It ends at the end of August and the beginning of September. In this way, the stems and leaves are strong but not prosperous, and a higher yield can be obtained. On the other hand, most drug farmers do not begin chemical control until the stems climb all over the frame, and the tender shoots of the stems twist and twist into a knot. When spraying, the young part is not sprayed alone, but the whole plant is sprayed, and it is used to be mixed with other pesticides, which is easy to form prosperous ground and poor growth of underground root tuber, resulting in low yield and poor benefit. Click to get more yam planting techniques click to get more vegetable planting techniques