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In recent years, the adjustment of agricultural structure and ternary planting structure to promote forage production has developed greatly the feed crop acreage has expanded each year, herbivorous animal husbandry increased year by year. The rapid development of herbivorous livestock for forage production provides a broad space for development, will further expand the acreage of forage. Italian ryegrass (Lolium multiflorum L.) in southern China in winter and spring field cultivation of forage with rice cropping Jiecha the. Spend ryegrass can make full use of the the Southern large area fallow fields, improve land utilization, but also increase the production of a large number of high-quality green fodder, good economic and ecological benefits. However, Italian ryegrass production of grass in the spring from March to May, the season is the Southern rain wet season. Spring ryegrass season excess modulation processing difficulties contradiction has become an obstacle to spend ryegrass further development of one of the main factors. Therefore, actively explore Italian ryegrass silage in the southern spring method is to spend more urgent need to address an important issue in the production of ryegrass. This test is particularly high Italian ryegrass as raw material, the use of the barrel silage, respectively ryegrass jointing and heading mowing direct storage, the wilting storage, wilting, formic acid, lactic acid, propionic acid, formaldehyde, cellulose, glucose, etc. modulation processing. Silage after 60d, open silage barrel the silage quality accreditation and silage nutrition component analysis. The results showed that Italian ryegrass directly after the spring harvest silage, due to higher water content (the jointing stage water content 83.59%, heading moisture content of 78.69%) is not easy to succeed appropriate wilting and the use of additives to ensure good quality silage . An adequate level of formic acid, lactic acid, propionic acid, organic acid can inhibit Italian ryegrass silage lactic acid fermentation, reduce ammonia nitrogen and lactic acid, increasing the content of soluble carbohydrates (WSC). Jointing stage of Italian ryegrass silage, respectively add 5.6mL/kg formic acid, the 7.0mL/kg lactic acid or 6.5mL/kg propionic acid, ammonia nitrogen content were decreased by 8.14% (P <0.05) and 15.14% (P < 0.05) and 4.34% (P> 0.05), lactic acid content were reduced by 5.80% (P <0.05), 13.27% (P <0.01) and 6.30% (P <0.05), and the WSC content was increased to 236.81% (P < 0.01), 276.81% (P <0.01) and 179.15% (P <0.01). The heading Italian ryegrass silage, respectively add 3.2mL/kg formic acid, the 4.5mL/kg lactic acid or 6.5mL/kg propionic acid, ammonia nitrogen content were decreased by 10.56% (P <0.05), 9.14% (P < 0.05) and 11.03% (P <0.05), lactic acid content were reduced by 5.65% (P <0.05), 6.79% (P <0.05) and 10.06% (P <0.01), WSC content were increased by 42.92% (P < 0.05), 125.51% (P <0.01) and 221.55% (P <0.01). The wilting spend rye Ping glucose silage pH can reduce lactic acid and WSC content increased significantly (P <0.05). Wilting of Italian ryegrass add cellulase silage, can significantly reduce silage neutral detergent fiber of Italian ryegrass Spring silage technology (NDF) and hemicellulose content, good gas mildew rate is significantly reduced. Formaldehyde Italian ryegrass silage ammonia nitrogen content was significantly lower (P <0.05) decrease in protein loss. Propionate treatment can significantly reduce the rate of corruption of Italian ryegrass silage aerobic. Low concentrations of lactic acid and propionic acid treatment had no significant effect on the quality of Italian ryegrass silage. Select single additive Italian ryegrass silage, jointing stage after wilting per xg Italian ryegrass were added formic acid 5.6mL, lactic acid 7. OML, propionic acid 6. SML, formaldehyde 3. the SML, cellulase 0.759 or glucose N; spend heading wilting hoot ryegrass Tim force mouth formic acid 3.2. L, lactic 4. SML, propionic acid 6. SML, formaldehyde 3. SML, cellulose enzyme. sg or glucose m is appropriate.
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