The Response Of Dry Matter Accumulation And Yield Of Strong Gluten Wheat To Different Irrigation In Eastern Hebei Province

Two strong gluten wheat varieties(Jinnong 7 and Shiyou 20)were selected for this study.Four irrigation treatments were set up(W1: winter water;W2: winter water + jointed water;W3: winter water + jointed water + flower water W4: winter water + jointed water + flower water + grout water).Under the condition of pooling in rainproof sheds,the effects of irrigation volume on photosynthetic characteristics and fluorescence characteristics of strong gluten wheat flag leaves were studied,and the strong gluten wheat was investigated.The response of material accumulation and transport to irrigation volume further explored the effect of irrigation volume on yield and quality of strong gluten wheat.The results show:During the grain filling process,the chlorophyll content and the net photosynthetic rate of flag leaf of strong gluten wheat showed a single peak curve,and the peak appearance time was postponed with the increase of irrigation amount.It showed that increasing irrigation volume increased the chlorophyll content of strong gluten wheat flag leaf and increased the net photosynthetic rate,which was beneficial to the accumulation of photosynthetic products.Irrigation affected the accumulation and transfer of dry matter in the vegetative organs of strong gluten wheat after anthesis,and the extent of the effect varied with the amount of irrigation water.The stem dry weight and economic coefficient of strong gluten wheat plants treated with W1 were lower than those treated with W4,indicating that drought inhibited the accumulation of dry matter in post-anthesis vegetative organs of wheat.At the same time,the study found that the dry matter transport of the vegetative organs in the two wheat varieties showed W1 treatment was higher than W4 treatment,indicating that the increase of irrigation volume inhibited the transfer of dry matter from the vegetative organs to the grain after anthesis and reduced the transfer of nutrient organs to the grains.The contribution rate.The study found that the protein content of strong gluten wheat decreased with the increase of irrigation volume,indicating that the increase of irrigation volume was not conducive to the increase of grain protein content.Grain protein components showed significant differences in response to different irrigation doses.Increased irrigation volume was beneficial to the increase of grain glutenin content,but inhibited the accumulation of globulin.This study shows that irrigation significantly affects the content of starch and its components in strong gluten wheat,and there is a difference between the varieties.The content of starch in grain of Jinnong 7 was the lowest under W1 treatment,which indicated that drought inhibited the accumulation of total starch content,and the effect of irrigation on the grain straight/branch ratio was not significant.The total starch content of Shiyou 20 increased with the increase of irrigation volume.There was a significant difference in the content of amylopectin in different treatments,and the amylose content was not significantly different.The results of this study show that appropriate increase in irrigation volume increases the grain yield of strong gluten wheat.The yield of W4 treatment of Jinnong 7 reached 8661.3kg/hm2,and that of Shiyou 20 was 7943.55kg/hm2 of W3 treatment.Drought reduced the average grain filling rate of strong gluten wheat after anthesis,shortened the duration of grain filling,reduced grain weight,and resulted in a reduction of wheat yield.In summary,Jinnong 7 under the W2 treatment conditions,the content of grain protein is as high as 16.43%,and the yield is relatively high.It is suitable for planting and planting in Jongdong area,and W2 treatment is the most suitable irrigation volume.