论文部分内容阅读
我区水地小麦施用尿素,大多采用少量作种肥、多量作追肥撒施的办法。种肥效果好,但用量稍多,就影响出苗。追肥由于种种原因,大多不能在分蘖期及时追肥灌水,常推迟至拔节期,肥效不高。我们曾研究在播种沟内撒施尿素的施肥法,确定土地利用率100％、每亩尿素40斤,作为标准用量,生产应用按此折算,不超过标准用量,不影响出苗。并提出提高土地利用率的办法,以增加尿素用量。机播小麦采用此种办法,省工省事,能提高肥效。但此办法,在目前需要中耕的情况下,最大能把土地利用率提高到50—60％,尿素用量提高到20—24斤。对于土壤墒情差、轻度盐渍化以及播种施肥质量
Urea water in our district to use urea, mostly used as a small amount of seed fertilizer, a large amount of top dressing for spreading methods. Fertilizer effect is good, but a little more dosage, it affects the emergence. Top dressing for many reasons, most of the time can not be top-dressing irrigation at the tillering stage, often postponed to the jointing stage, the effect is not high. We have studied the application of urea in the sowing ditch fertilization method to determine the land utilization rate of 100%, 40 kg of urea per mu, as a standard dosage, production and application of this conversion, does not exceed the standard dosage, does not affect the emergence. And put forward ways to improve land utilization in order to increase the amount of urea. Machine-borne wheat using this approach, save time and energy saving, can improve fertilizer efficiency. However, this approach, in the current need of cultivating the case, the maximum can increase the land utilization rate to 50-60%, the amount of urea increased to 20-24 kg. Poor soil moisture, mild salinization, and quality of seeding fertilizers