| Study on harvesting high quality roughage in corn field of the ecotone between agriculture and animal husbandry in Northeast China — Effects of detasseling and defoliating on yield and corn straw feeding value |
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| DOI：10.7606/j.issn.1000-7601.2009.03.01 |
| Key Words: corn straw silking detasseling and defoliating for corn yield corn straw feeding value the ecotone between agriculture and animal husbandry in Northeast China |
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| Abstract: |
| To study the effect of different detasseling and defoliating treatments on yield and straw feeding value, the corn was planted in two row space in corn field of the ecotone between agriculture and animal husbandry in Northeast China and detasselled and deleaved for three treatments at silking stage, then the green corn straw were cut for feeding livestock.The result showed that three treatments of detasseling and defoliating 1-3 top leaves for corn with narrow row space can increase yield by 16.6%～32% in comparison with no detasseling and defoliating treatment with conventional row space, it can also produce more green corn straw with high content of crude protein and digestibility, and more metabolizable energy.The yield of detasseling and defoliating 1 tip leaf treatment was higher than that of contrast treatment and obtain corn straw with high content of crude protein and digestibility when planting corn with the conventional row space.So cutting the green corn straw earlier in the condition of no effect on yield can supply green corn straw with higher nutritional value and better palatability for livestock which can substitute to forage grass in the ecotone between agriculture and animal husbandry in Northeast China.These are doable approaches for developing the grassland agriculture and lessen the grassland pressure. |