Effect Of Yield And Quality With N Regulation On Triticale Of Different Harvest Time

Triticale is an improved variety in grass forages. It has important significance in development of animal husbandry and in agriculture structure adjustment. If plant triticale in Heilongjiang province, not only fill the gap of feed, but also deal with the problem of soybean continuous cropping. It can produce higher yield and feasible. The experiment carried in northeast agricultural university test base - xiangfang farm, in order to determine reasonable fertilization level and harvest time for widespread production and provide theoretical guidance, the experiment researched of different nitrogen dosage and nitrogen fertilizer types and different harvest time to explore triticale yield and quality and reclamation performance change.The experiment selected triticale Dongnong5305, set nitrogen regulation and harvest time two factors, nitrogen regulatory factors are N1(N level 100 kg·hm^–2),N2(N level 150 kg·hm^–2),N3( N level 200 kg·hm^–2), Above for urea nitrogen species, N4(N level 150 kg·hm^–2 nitrogen fertilizer was slow release fertilizer), N5(N level 100 kg·hm^–2 nitrogen fertilizer was urea, and plug organic fertilizer 200 kg·hm^–2). Three harvest time was C1(heading harvest), C2(flowering period harvest), C3(half culming harvest).The result of the study indicated thatUnder various nitrogen regulation triticale has different physiological indexes. Increasing nitrogen can promotes triticale height, leaf area index,tillering and chlorophyll content. Under organic fertilizer treatment ,the triticale in the whole period with height and leaf area index at high levels. After flowering period, the slow release fertilizer promoted the leaf area index evidently. for the triticale tiller number and the chlorophyll content, under high nitrogen level. they were also higher. and the slow release fertilizer and organic fertilizer treatment can also reached a high level, the effect was remarkable.N regulation has a great influence on the triticale yield. The yield of N3 treatment was significantly higher than N1 and N2. the yield under the slow release fertilizer treatment in heading harvest was below than N3.and in flowering and half culming no significant difference with the yield of N3 treatment and they achieve higher yield too. N5 treatment of significant contribution in increasing amount of dry matter accumulationWith the available nitrogen was increased, the quality of triticale increase significantly. The treatment of high nitrogen content has more crude fat and crude protein content, at the same time, the content of neuter washing fiber and acid washing fiber is low, stem leaf ratio was low. N4 and N5 treatment also had higher quality, in contrast, N4 was better more in later periodThe harvest was different, the feeding quality was difference. Overall, with the second stubbly grass harvest-time delayed, and the same fertilization treatment fresh weight, dry weight increases, crude protein, crude fat content declined, triticale woodiness aggravating, the degree of neutral washing fiber and acid washing fiber content increased, its stems and leaves ratio increased, forage grass palatability and digestive rate decline significantly.The use could be made through different harvest period. Half culming used to silage, and bask in hay, alleviate the problem of insufficient forage in winter and early spring. Flowering harvested, can be seasonal feed and also can made hayThe soluble sugar and nitrogen content in roots and stubble of decisive role after cutting, in different fertilizer treatment soluble sugar and nitrogen in the root change consistently. falling rapidly and rising gradually. The content and variation amplitude of the two substances in stubble was more than in roots. Different fertilizer treatments has different effect for regeneration, N3, N4 and N5 the content of soluble sugar and nitrogen was higher, luffing was larger, regeneration ability was stronger.Comprehensive triticale yield and quality of the comparison results, determine 200 kg.hm^–2 urea nitrogen was more reasonable, slow release fertilizer and organic fertilizer in promoting yield and quality is relatively ideal, on saving resources and labor was superior than N3 treatment according to different forage grass uses to choose reasonable harvest time.