The way for Farmers to get Rich in Heze, Shandong Province-Corn interplanting potatoes

The Huang-Huai River Basin is the main producing area of summer corn in China. Although the price of corn has fallen, it is impossible to significantly reduce the area of corn in the short term.

Heze High-tech Agricultural Science Research Institute has actively explored the model of summer corn interplanting autumn potatoes and achieved fruitful results. In 1999, the whole region promoted 3500 mu and increased its income by nearly 10 million yuan. In the Yangtze River and Huang-Huai River basins, due to the high temperature in summer and autumn, potato planting is mainly spring sowing. Autumn cultivation is highly technical and difficult. In the past, the yield per mu was only about 500 kg, so the area of potatoes planted in autumn was small, and the market time was from December to January. In addition, as the commodity is better than northeast potatoes, the sales price is generally in 500 grams / 0.50-0.80 yuan, and very best-selling.

The intercropping of potato and corn does not reduce the yield of corn, and shading and cooling potatoes in the early stage, which is conducive to the emergence of whole seedlings, which is a better model for the development of efficient agriculture in the Huang-Huai River Basin.

First, select excellent varieties. Yuyu 22 with high yield and large ear and sparse planting is suitable for maize. Under the condition of planting 2200-2600 plants per mu, this variety can still reach the yield of 500kg per mu. Potatoes can choose Luyin No. 1, Holland 15, Jinshu No. 8, which have a short sleep period.

Second, sowing seeds at the right time. Corn is suitable for early sowing or interplanting in wheat fields to promote corn harvest around the middle of September, and the sowing period of potatoes can be advanced to early August.

Third, interplanting method. Corn row spacing 90 cm, plant spacing 25 cm-30 cm; potato row spacing 60 cm, plant spacing 20 cm, planting 5000-5500 plants per mu. 175 kg-300 kg of seed potato per mu.

IV. matters needing attention

1. The selected potato species must be harvested before and after May 10, so that the potatoes can naturally go through a dormant period of about 90 days to ensure a whole seedling. Potatoes must be sown with whole potatoes in autumn, and sprouting must be avoided. The whole potato seeds can be soaked in 600 times carbendazim solution for 10 minutes before sowing, and its sterilization and disinfection effect is better.

2. Choose dry sandy loam soil to plant, avoid waterlogging depression and stagnant water land. Grass can be covered on the border after sowing. After the corn harvest, the temperature turns cool, potatoes enter the middle stage of growth, it is necessary to water and fertilize frequently. The harvest time is 3-5 days after the first frost. Where there are conditions, protective measures can be adopted to cover, making use of the advantage of warmer temperature in early winter to make potatoes continue to grow and significantly increase the yield.

3. Diseases and insect pests are important factors affecting the stable development of potato production and limiting the increase of per unit yield. There are more than 100 kinds of potato diseases, generally due to a 10% yield reduction of 30%, and a serious yield reduction of more than 70%. There are 15 kinds of common diseases in China, among which late blight, ring rot and virus diseases are generally called "three major diseases". For more questions about planting and aquaculture, you can consult experts on the Cloud farming platform, which has become the world's largest agricultural technology Q & A website. It brings together hundreds of thousands of planting and farming experts to ensure that each question raised is answered within 2 minutes.