不同種肥間距對夏玉米產(chǎn)量的影響

1、 不同種肥間距對夏玉米產(chǎn)量的影響 魏龍雪 張洪勇 張書良 路永民 李玉玲 張秀峰 Summary 目的研究夏玉米種肥異位同播下，不同種肥間距（種肥水平距離和施肥深度）對夏玉米產(chǎn)量的影響， 為夏玉米輕簡化高產(chǎn)高效栽培提供技術(shù)支撐。方法采用裂區(qū)設計， 4 種種肥水平距離（5、10、15、20 cm）為主處理; 4 種施肥深度（4、8、12、16 cm）為副處理。結(jié)果不同種肥間距（種肥水平距離和施肥深度）對夏玉米出苗率、根系形態(tài)和產(chǎn)量因子、產(chǎn)量都有顯著的作用效應，二者交互作用產(chǎn)生顯著正效應，保持較高出苗率、根系形態(tài)及獲得更好產(chǎn)量因子，進而提高產(chǎn)量，作用效應達顯著水平。夏玉米產(chǎn)量均呈先增后減的單峰趨勢

2、。處理組合中，獲得最高產(chǎn)量的為 A2B2，夏玉米產(chǎn)量達 8 431.97 kg/hm2。其次為 A2B3 處理 8 426.88 kg/hm2、A2B4處理 8 421.27 kg/hm2、A3B2處理8 414.45 kg/hm2。A2B3、A2B4和A3B2處理間差異不顯著，但與其他處理組合間差異達顯著水平。A1B1產(chǎn)量最低為7 596.11 kg/hm2。結(jié)論獲得較高產(chǎn)量的處理為 A2B2 A2B3 A2B4 A3B2，這4個處理的夏玉米產(chǎn)量與其他處理在0.05水平差異顯著。因此，夏玉米異位同播較適宜的種肥間距為種肥水平距離10 cm時，施肥深度816 cm;種肥水平距離15 cm時，施

3、肥深度8 cm。Key 夏玉米; 種肥水平距離; 施肥深度;產(chǎn)量S 513 A0517-6611（2021）14-0146-03Abstract Objective To study the effects of different seed fertilizer spacing （horizontal distance of seed fertilizer and fertilization depth） on summer maize yield， so as to provide technical support for light， simple， high yield and ef

4、ficient cultivation of summer maize.Method Fracture zone design was adopted.The horizontal distance of various fertilizers （5，10，15，20 cm） was mainly treated; four fertilization depths （4，8，12，16 cm） were treated as side treatments.Result The different seed manure spacing （seed manure horizontal dis

5、tance and fertilization depth） on summer corn seedling emergence， root morphology and yield factor， production had a significant effect， both interactions had a significant positive effect， have maintained good germination rate， root morphology and get better production factor， thus increasing produ

6、ction.The yield of summer maize increased at first and then decreased at a single peak.In the treatment combination， the highest yield was A2B2， and the yield of summer maize was 8 431.97 kg/hm2.A2B3 treatment was followed by A2B4 treatment with 8 426.88 kg/hm2， A2B4 treatment with 8 421.27 kg/hm2 a

7、nd A3B2 treatment with 8 414.45 kg/hm2.There was no significant difference between A2B3， A2B4 and A3B2， but there was significant difference between A2B3， A2B4 and A3B2.The minimum output of A1B1 was 7 596.11 kg/hm2.Conclusion The treatment with higher yield was A2B2 A2B3 A2B4 A3B2.Compared with oth

8、er treatments， the yield of summer maize under these four treatments was significantly different at the level of 0.05.Therefore， the suitable seed and fertilizer spacing for summer maize were as follows：when the horizontal distance of seed and fertilizer was 10 cm， the fertilization depth was 8-16 cm; when the horizontal distance of fertilization was 15 cm， the fertilization depth was 8 cm.Key words Summer maize;Horizontal distance of planting fertilizer;Dept