Summer corn cultivation with less tillage
Arable lands in mountainous areas and hills are likely to cause serious soil erosion in rainy seasons and affect crop yields. The use of wheat stubble intercropping summer corn cultivation method, can achieve satisfactory water conservation, soil conservation, fertilizer conservation, increase production, economic and ecological benefits are significant. Summer corn less tillage method uses wheat ridge interplanting or sticking seed to sow corn. When harvesting wheat, leave wheat stubble 10~15cm. During the whole growth period of corn, no need to plan wheat stubble, which not only reduces the plow, hoe,锄 and other farming links, and increased soil conservation capacity. 1. Technical points: Plant wheat at a certain height on a sloping field with a 30 cm wide ridge back in the middle, sowing the corn at the wheat ridge in the first 10 days before the harvest; after the wheat is harvested, the mung bean or soybean is interplanted between the rows of corn, after emergence. , Shallow ploughing (less than 5cm in plough depth) to eliminate grass 1 times, and still retain wheat glutinous rice. When 5 to 6 leaves of maize are to be developed, the diggings will be applied one time and the top will be no longer cultivated. 2. Advantages: 1 Soil conservation effect is obvious. Experiments have shown that less tillage method can reduce runoff by 6.3% and reduce soil erosion by 38.1% compared with conventional methods, and has significant effect of water storage and sand retention. Retention of wheat bran increased soil seepage; increased surface coverage, in the hot and dry period, less tillage method than the conventional method to reduce the surface temperature of 1 ~ 6 °C; reduce the evaporation of soil moisture, improve the soil's ability to maintain earthworms. 2 Inhibition of weed growth. Less tillage can reduce weeds by about 40%. 3 improve the lodging resistance of corn. According to the results, compared with the conventional method, the minimum single-cultivation method increased the average roots per plant by 8.3% and the total length of the root system by 15.3%, which increased the lodging resistance of maize. 4 Increase summer corn production. Every 667 square meters can save 4 working days, with an average increase of 30kg corn.