论文部分内容阅读
在草甸白浆土上对草木樨、秣食豆、黑麦草根茬的培肥增产效应进行了5年的试验研究。结果表明,强大的绿肥根系,能够改善土壤理化性质,提高后作物产量。以5年粮豆总产量计,粮草轮作的产量较之粮豆轮作的产量相等或略低;但在粮草轮作中,绿肥地多收鲜草(饲料)1350～1500公斤/亩;总效益高于粮豆轮作。把绿肥全部翻压作肥料同只用绿肥根茬还田的对比中,后者的效益大于前者。
A 5-year experimental study was conducted on the yield-increasing effects of stubble on the meadow albacore soil for the grass stalk, edible beans and ryegrass stubble. The results showed that the strong green manure root system can improve soil physical and chemical properties and increase post-crop yield. The output of forage grass round crop is equal to or slightly lower than that of grain bean sprouts in the total grain yield of 5 years. However, in the forage grass rotation, the green manure land receives 1350-1500 kg / mu of fresh grass (feed), and the total benefit is high In the bean rotation. The green manure all the pressure for fertilizer with only green manure stubble contrast, the latter’s benefit is greater than the former.