Planting mode of'winter oat grass + summer corn 'in Huang-Huai-Hai region

Abstract

The invention relates to a'winter oat grass + summer corn 'planting mode in Huang-Huai-Hai region, which comprises the following steps: (1) sowing oat grass from late October to early November with the effective sowing rate of 6 kg / mu; (2) from the end of March to the beginning of April, irrigating and topdressing when the highest stem node of the oat is 15cm above the ground, and harvesting oat hay or silage in May; (3) after the oat grass is harvested, the late-maturing corn is sown as early as possible in a no-tillage and stubble-attaching mode; and (4) harvesting whole corn silage in mid-to-late September, or harvesting grains in late at proper time in October. The overwintering problem of autumn-sown oat grass is effectively solved, the yield is higher than that of spring-sown oat grass by 40% or above, and the sowing amount is reduced by 40%; autumn sowing oat grass is late in sowing and early in harvesting, early planting and late harvesting of corn can be achieved, and the yield of high-quality forage grass per unit area is increased.

Description

technical field [0001] The invention relates to the technical field of forage planting, in particular to a planting pattern of "winter oat grass + summer corn" in the Huanghuaihai region. Background technique [0002] The total number of dairy cows, beef cattle, and mutton sheep in the Huanghuaihai region accounts for 50% of the country, and there is a large demand for high-quality forages. However, high-quality forages such as oat grass in my country rely heavily on imports, and the complex external environment affects the security of forage supply. At present, my country is vigorously developing the planting and production of high-quality forage grass such as silage corn and oat grass, so as to improve the self-sufficiency of high-quality forage grass in short supply. Oat is a grain-feeding crop that can be used as high-quality forage grass when harvested before the grains mature. How to increase the yield of oat grass is an urgent problem to be solved. In the Chinese pat...

AI Technical Summary

Problems solved by technology

In Chinese patent CN111657078B, the crop rotation method of oats, silage corn and vetch can increase the yield of forage grass, but the technology of spring sowing oats has a short growth period, low grass yield, and can only be harvested in early June, which is not conducive to the selection of high-yield late-maturing corn for stubble planting

Because spring-sowed oats do not have the problem of overwintering, cold resistance is not a breeding goal, and it is difficult to buy oat seeds with strong cold resistance in the market

The existing technology (Zhuang Kezhang et al. Comparison of production performance between autumn sowing and spring sowing of oats resistant to low temperature in southern Shandong [J]. Feed Research, 2021) shows that autumn sowing has obvious yield advantages over spring sowing, but this technology follows the Northwest and other northern regions. The sowing row spacing is 30cm and the sowing rate is 10kg / mu. The sowing date of different varieties that can safely survive the winter has not been specified. For example, if blind autumn sowing, there is a risk of oat overwintering and serious economic losses

Images