1. Select high-quality varieties
Selecting appropriate taro varieties is the first condition to ensure high yield. In Shandong province, the recommended varieties are sweet potato 25, chengyu, huangyu 4, etc. These varieties have strong adaptability, strong disease resistance and high yield.
2. Scientific fertilization
Pay attention to the cooperation of base fertilizer and topdressing in taro fertilization. Fertilizers can be divided into organic fertilizers and inorganic fertilizers. Organic fertilizer is mainly human and animal manure, decomposed deep stubble and so on. When using chemical fertilizer, nitrogen, phosphorus and potassium are the main nutrient elements, urea and ammonium sulfate are usually used as nitrogen sources, and phosphate probiotics and potassium sulfate are used as phosphorus and potassium sources for topdressing. Pay attention to the proportion and application opportunity of fertilizer.
3. Pay attention to irrigation management
The growth period of taro is long, and improper irrigation can easily lead to lower yield. In Shandong area, irrigation should be carried out at the right time, and water should be done in a proper amount, at the right time and in the right place. In the dry season, it is necessary to strengthen irrigation to ensure sufficient water.
4. Scientific pest control
There are many diseases and insect pests in taro, mainly including taro (Portunus trituberculatus), taro stinkbug (Haematophaga) and taro scab. When controlling pests and diseases, we should give priority to prevention, timely spray drugs, adjust ecological balance and other measures to ensure the health and high yield of taro.
Cultivation techniques of taro and fertilizer 1. soil
For taro growth, choose the land with high local soil fertility, deep soil layer, good drainage and good ventilation. The PH value of the soil is required to be between 6.0 and 7.0. The soil with insufficient fertility needs to be regulated by fertilizers such as organic fertilizer, phosphate probiotics and potassium ternary sulfate.
Step 2 plant
The planting time of taro is generally from the end of April to the beginning of May, or from the end of August to the beginning of September, depending on the local climate and soil conditions. The number of taro plants per mu is about 800- 1 100, and the spacing between plants should be kept at about 30CM×30CM. The row spacing should be about 0.95-1.20m..
Step 3 apply fertilizer
Fertilization of taro should be based on topdressing, supplemented by base fertilizer. The time and frequency of fertilization should be comprehensively considered according to the growth status of taro, soil conditions and climate conditions. The proportion of nutrient elements of N, P and K can be adjusted according to the soil conditions. Attention should be paid to the selection of fertilizers, and it is necessary to ensure that they have certain biodegradability.
Step 4 manage
The growth period of taro is long, so the management measures such as ploughing the soil regularly, pruning the joint seedlings in time, weeding and irrigation should be taken. When controlling pests and diseases, we should give priority to prevention, spray drugs in time and pay attention to the rotation of taro with other crops or livestock and poultry.
Step 5 harvest
In general, the growth period of taro in Shandong is about 7-8 months. The harvest time of taro varies slightly according to the region and planting time, and it is usually harvested from the end of April to the beginning of May, or from the end of September to the beginning of 10. Taro should avoid damage when harvesting, so as not to affect the harvest.
To sum up, through scientific fertilization, attention to planting management, timely prevention and control of pests and diseases and other technical means, the taro planting industry in Shandong Province will usher in a more fruitful future.