超级小麦郑麦7698生长发育特性及其配套技术研究

Research on the Development Characteristics and the Cultivation Techniques of Super-wheat Zhengmai 7698

为配合优质强筋小麦新品系郑麦7698的推广,采用大田攻关和小区试验相结合,探讨郑麦7698生长发育特点和超高产配套栽培技术。结果表明,郑麦7698自动调节能力强,分蘖成穗中等;籽粒灌浆期长,粒质量增加快,每1 000粒日增重平均达2.1 g;在大于10 500 kg/hm2产量水平下,郑麦7698产量结构为穗数648万穗/hm2,穗粒数37.5粒,千粒重47.2 g;在9 750~10 500 kg/hm2产量水平下,其产量结构为588万穗/hm2,穗粒数38.1粒,千粒重46.3 g。超高产配套栽培技术：深耕细耙,提高整地质量;增施有机肥,重施底肥;足墒精细播种,保证全苗、匀苗;因地因苗因气候条件有针对性强化生育期间的应变调控和管理。

In order to coordinate with the promotion of the strong gluten wheat variety,Zhengmai 7698,the growth characteristics of Zhengmai 7698 and the relevant super-high yield cultivation technique were analyzed according to the researches in the field and experiments in small areas.The results showed as follows： Zhengmai 7698 had the automatic adjustment ability and moderate tiller;it had a long period of grain filling,and the weight of grain in filling stage increased fast,with an average of 2.1 grams of one thousand grains per day;under the condition of super-high yield,the dry matter weight of Zhengmai 7698 was mainly from the photosynthate after flowering.When the yield of Zhengmai 7698 was more than 10500kg/ha,the structure of its output was 6480000 spikes/ha,37.5 grains per spike,and 1000-seed weight of 47.2g;when its yield was 9750-10500kg/ha,the structure of its output was 5880000 spikes/ha,38.1 grains per spike,and 1000-seed weight of 46.3g.The relevant cultivation techniques of super-high yield： intensive cultivation to improve the quality of field;increased fertilization of the organic fertilizer and heavy application of the base fertilizer;giving sufficient moisture and fine seeding to ensure full and uniform seedlings;and improving the regulation during the wheat growth according to the field,the seedlings and the weather.