"Deep loosening + late harvest": there is a knack for increasing corn production.

Just after the Mid-Autumn Festival, Zhao Jinliang, a farmer from Zhaojiawa Village, Dingzhou City, Hebei Province, came to his own land again. He pulled the reporter to the edge of the field and said proudly, "it's been a good year. Look at my stick (corn) getting 1300 jin per mu."

The reporter went into the field to take a closer look, indeed, his 6 mu corn density is suitable, the straw is stout, and many of them have two corn cobs. The reporter carefully peeled off a corn cob and saw that the corn kernels were very full and adorable. No wonder Zhao Jinliang wandered around the fields every day, even though there was no work left in the fields.

Zhao Guojun, director of the village committee on one side, shook one of the corn plants and told the reporter: "these plots are deeply loose, so the roots are developed and the straw is strong."

A relevant responsible person of the Dingzhou Municipal Bureau of Agriculture said that Dingzhou is a demonstration county of the Ministry of Agriculture and Hebei Province to jointly build land deep pine projects. This year, the deep pine area has reached 400000 mu, involving more than 100,000 farmers. The soil depth of mechanical deep loosening is more than 25 cm. After deep loosening, the root system of crops is much stronger, and the effect of increasing yield is obvious.

"in order to maximize the yield per unit area, it is necessary to change the traditional habit of being eager to harvest and popularize the late harvest technology of corn. This year's corn harvest period should be from late September to National Day." Wu Yongshan, director of Dingzhou Agricultural Technology Station, said. He explained to the reporter in detail, "in the past, we used to see the corn bag leaves turn yellow to harvest, in fact, it is not fully mature, when the harvest is only equivalent to 80% of the yield of 85%." Now is the period of filling and growing seeds, increasing the weight of 1000 grains by 1-2 grams per day, and the appropriate time for late harvest can increase the income by more than 100 jin per mu. "