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马铃薯(Solanum tuberosum)是一种重要的经济作物,它可以用作粮食、蔬菜、饲料及工业原料作物,江汉平原是马铃薯发展的新区。费乌瑞它是一个适宜于低山平原的早熟、优质马铃薯品种。探索马铃薯高产、优质的栽培技术规程是获得马铃薯最大经济效益、促进马铃薯生产持续发展的重要前提,为了探讨马铃薯秋播的最佳密度,设置了4 000穴/667m2、7 000穴/667m2、10 000穴/667m2、13 000穴/667m2、16 000穴/667m2、19 000穴/667m2等6个播种密度,研究密度对马铃薯费乌瑞它的主要农艺性状及产量的影响。试验表明:播种密度与生育期呈极显著正相关(y=0.000 8x+80.514,r1=0.990 7**),密度每增加300穴/667m2,生育期延长2.4d;密度与株高(r2)呈显著负相关(r2=-0.895 1*),与出苗率(r3)、主茎数(r4)、单株块茎数(r5)和商品薯率(r6)呈极显著负相关(r3=-0.941 1**,r4=-0.992 4**,r5=-0.964 4**,r6=-0.937 9**);密度与单株块茎重(r7)呈二次曲线关系(y=-1E-0.6x2+0.016 8x+139.78,r7=-0.837 0*),当密度为8 498穴/667m2时,单株块茎重达到最大值;密度与单产(r8)为二次曲线关系(y=-8E-0.6x2+0.208x+157.61,r8=-0.726),当密度为12 838穴/667m2时,单产达到最大值;密度与商品薯产量为二次曲线关系(y=-6E-0.6x2+0.141 9x+193.95,r8=-0.767*),当密度为1 1087穴/667m2时,商品薯产量达最大值;10 000穴/667m2播种密度的马铃薯单产和商品薯产量居首,分别为1 630.9kg/667m2和1 109kg/667m2,综合性状优良;13 000穴/667m2的效果次之;单产随后的各处理依次为19 000穴/667m2(1 304.6kg/667m2)、16 000穴/667 m2(1 211.3kg/667 m2)、7 000穴/667m2(1 210.5kg/667m2)、4 000穴/667m2(809.1kg/667m2);商品薯随后的各处理依次为13 000穴/667m2(847.3kg/667m2)、16 000穴/667m2(767.9kg/667m2)、19 000穴/667m2(634kg/667m2)、4 000穴/667m2(618.1kg/667m2);4 000穴/667m2的商品薯率最高,19 000穴/667m2的商品薯率最底,各处理的商品薯率依次为4 000穴/667m2(76.40%)、7 000穴/667m2(74.0%)、10 000穴/667m2(67.9%)、13 000穴/667m2(63.9%)、16 000穴/667m2(58.5%)、19 000穴/667m2(48.8%)。
Solanum tuberosum is an important cash crop that can be used as a food, vegetable, animal feed and industrial raw material crop. Jianghan Plain is a new area for potato development. Feiurui It is a precocious, high-quality potato variety suitable for lowland plains. In order to explore the optimal planting density of autumn potato, 4 000 holes / 667 m 2, 7 000 holes / 667 m 2 and 10 6 66 m 2 were established to explore the high-yielding and high-quality cultivation technical regulations of potato, which is the most important prerequisite for getting the maximum economic benefit of potato and promoting the sustainable development of potato production. 000 holes / 667m2, 13000 holes / 667m2, 16000 holes / 667m2, 19000 holes / 667m2, etc. The effects of planting density on its main agronomic characters and yield were studied. The results showed that there was a significant positive correlation between the sowing density and the growth period (y = 0.0008x +80.514, r1 = 0.9907 **), the density increased by 2.4 d after each growth of 300 holes / 667m2, (R2 = -0.895 1 *), and had a significant negative correlation with the emergence rate (r3), main stem number (r4), tuber number per plant (r5) and r6 (r3 = 0.941 1 **, r4 = -0.992 4 **, r5 = -0.964 4 **, r6 = -0.937 9 **). The density had a quadratic curve relationship with plant weight (r7) (y = -1E- 0.6x2 + 0.016 8x + 139.78, r7 = -0.837 0 *). When the density was 8 498 holes / 667m2, the tuber weight reached the maximum. The density and yield (r8) were quadratic curve (y = -8E -0.6x2 +0.208x + 157.61, r8 = -0.726). When the density was 12 838 pits / 667m2, the yield reached the maximum value. The relationship between density and commercial potato yield was quadratic curve (y = -6E-0.6x2 + 0.141 9x + 193.95, r8 = -0.767 *). When the density was 1 1087 holes / 667m2, the potato yield reached the maximum value. The potato yield and commodity potato yield of 10 000 holes / 667m2 planting density topped 1 630.9kg / 667m2 and 1 109kg / 667m2, respectively. The comprehensive traits were excellent; the effect of 13 000 seeds / 667m2 was followed; the subsequent treatments were followed by 19 000 holes / 667m2 (1 304.6kg / 667m2) 16,000 points / 667 m2 (1 211.3 kg / 667 m2), 7,000 points / 667 m2 (1 210.5 kg / 667 m2), 4,000 points / 667 m2 (809.1 kg / 667 m2), followed by 13 000 (847.3 kg / 667m2), 16,000 points / 667m2 (767.9kg / 667m2), 19,000 points / 667m2 (634kg / 667m2), 4,000 points / 667m2 The highest potato product rate was 19,000 and the lowest was 667m2. The average potato product rate was 4,000 points / 667m2 (76.40%), 7,000 points / 667m2 (74.0%) and 10,000 points / 667 m2 (67.9%), 13,000 points / 667 m2 (63.9%), 16,000 points / 667 m2 (58.5%), 19,000 points / 667 m2 (48.8%).