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针对大型收割机械收割小麦存在秸糠掩盖、机轮碾轧、残茬较深问题 ,对麦垅套种玉米苗生长影响进行研究 ,结果表明 :大型小麦收割机的碾轧、留茬对套种玉米苗无显著不良影响 ,但留茬过高不利 ,故收割留茬高度宜在2 0cm以下 ;秸糠掩盖对玉米生长影响较大 ,收后应及时清理播种行秸糠 ,控制覆盖厚度在3cm以下 ;田间持水量低于 75%时 ,机轮碾轧对玉米出苗密度和生长无明显影响 ,田间持水量在 80 %以上 ,收麦后空气干燥 ,轮轧带 0～5cm的表层土壤持水量迅速降低 ,坚硬板结 ,会造成出苗密度下降
Aiming at the problems of large wheat harvesting machinery, such as straw covering, wheel rolling and deep stubble, the effects of wheat straw seedling maize seedling growth were studied. The results showed that the rolling and stubble of large wheat harvester were effective on intercrop corn seedling No significant adverse effects, but the stubble is too high and unfavorable, so the height of stubble harvesting should be below 20cm; straw masking has a great effect on the growth of maize; after harvesting, the straw should be cleared and sown promptly; the covered thickness should be below 3cm; When the field water content is less than 75%, wheel rolling has no obvious effect on the seedling density and growth of maize. The field water holding capacity is more than 80%. After the wheat is received, the air is dry, and the surface soil moisture of 0 ~ 5cm in the rolling belt rapidly decreases , Hard board knot, will result in decreased seedling density