玉米长黑斑，这是怎么了？ 各位打师，玉米棵上长黑斑咋回事？
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玉米长黑斑。是光照不足引起的。非没病。大多是不影响产量。绛旓細鍐滀笟闃叉不涓紝閫夎偛鍜岀妞嶆姉鐥呭搧绉嶆槸鏈缁忔祹鏈夋晥鐨勯槻娌绘柟娉曘傛姉鐥呭搧绉嶇殑绉嶆涓嶄粎鍙互浣垮綋骞寸殑鐜夌背鍏嶅彈鍗卞锛岃繕鍙互鏈夋晥鍑忓皯渚垫煋婧愩傜洰鍓嶆姉鐥呮ц緝濂界殑鍝佺鏈夎牎鐜37銆佹集鐜336绛夈傚湪鍙戠梾鍓嶆垨鍙戠梾鍒濇湡锛屽強鏃剁敤20%绮夐攬瀹佷钩娌3000鍊嶆恫銆50%澶氳弻鐏靛彲婀挎х矇鍓500锝800鍊嶆恫銆70%鐢插熀鎵樺竷娲ュ彲婀挎х矇鍓800锝1000鍊嶆恫銆...
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