推薦產(chǎn)品
2-hydroxy-2-(pyrrolidin-2-yl)aceticacid 5-hydroxy-3,3-dimethyldihydrofuran-2(3H)-one methyl3-oxo-4-m-tolylbutanoate ethyl3-oxo-4-o-tolylbutanoate methyl2,4-dioxopentanoate 1H-pyrazolo[3,4-b]pyridine-3-carboxylicacid 5-(2,2,2-trifluoroethoxy)picolinicacid 2,3-dihydroxyterephthalicacid 4-(tert-butoxycarbonyl)morpholine-2-carboxylicacid 2-(4-fluorobenzyloxy)aceticacid 2-(2-fluorocyclohexyloxy)aceticacid 2-(tetrahydro-2H-pyran-4-yloxy)aceticacid 2-(pyridin-4-ylmethoxy)aceticacid 2-(cyclopentyloxy)aceticacid 2-(pyrazin-2-ylmethoxy)aceticacid 2-((4-(trifluoromethyl)pyridin-3-yl)methoxy)aceticacid 2-(pyridazin-3-yloxy)aceticacid 2-(pyridin-2-ylamino)aceticacid 2-(1H-pyrrolo[3,2-b]pyridin-3-yl)aceticacid 2-(1H-pyrrolo[2,3-c]pyridin-3-yl)aceticacid 2-(2-methyl-1H-imidazol-1-yl)aceticacid 2-(1H-indol-3-yl)propanoicacid 2-(1H-indol-1-yl)aceticacid 2-(1H-1,2,3-triazol-1-yl)aceticacid 2-(1H-benzo[d][1,2,3]triazol-1-yl)aceticacid ethyl2-bromo-2-phenylacetate ethyl2-bromo-2-(2-bromophenyl)acetate 1-(tert-butoxycarbonyl)azetidine-3-carboxylicacid 1-(benzyloxycarbonyl)pyrrolidine-3-carboxylicacid 1-tert-butyl3-methylazetidine-1,3-dicarboxylate 2-methylpyrido[2,3-b]pyrazin-3(4H)-one isothiazol-4-aminehydrochloride tert-butyl2-oxa-7-azaspiro[3.5]nonane-7-carboxylate 2-oxa-7-azaspiro[3.5]nonane 4-hydrazinylpyridin-2(1H)-one (7H-pyrrolo[2,3-d]pyrimidin-4-yl)methanaminehydrochloride 1-cyclopropylpiperazine 7-oxa-2-azaspiro[3.5]nonanehydrochloride 4,4-difluorocyclohexanaminehydrochloride 4-(1,3,4-oxadiazol-2-yl)aniline 4-(1,2,4-oxadiazol-3-yl)aniline 3,4-dihydro-2H-benzo[b][1,4]oxazine 3-(1-methyl-1H-pyrazol-4-yl)aniline piperazin-2-one methylpyrrolidine-3-carboxylate 2-(8-fluoronaphthalen-2-yl)-4,4,5,5-tetramethyl-1,3,2-dioxaborolane 6-(dimethylamino)-4-methylpyridin-3-ylboronicacid 3-bromo-7-chloro-5-methyl-1H-pyrazolo[4,3-b]pyridine 7-chloro-5-methyl-1H-pyrazolo[4,3-b]pyridine 5-bromo-3,3-dimethylindolin-2-one 市場(chǎng)行情 河北地區(qū)棉農(nóng)多從4月底開始進(jìn)行棉花播種工作，受天氣因素影響，今年棉花出苗率較往年同期有所下降。目前已經(jīng)進(jìn)入棉苗生長(zhǎng)期，各地普降小雨，旱情得到緩解。
據(jù)當(dāng)?shù)孛揶r(nóng)反映，由于棉花出苗期間，氣溫變化較大，棉苗出苗率在85%以上，較去年有所下降。5月21日，河北省普降小雨，緩解棉田旱情，增加了土壤墑情，苗期的適當(dāng)降水利于棉苗發(fā)育生長(zhǎng)。
據(jù)當(dāng)?shù)貧庀蟛块T預(yù)報(bào)，降雨過后天氣將轉(zhuǎn)晴，氣溫將逐漸回升至31攝氏度左右。棉農(nóng)表示，天氣轉(zhuǎn)晴之后將及時(shí)進(jìn)行中耕松土，使土壤保持疏松，促進(jìn)根系生長(zhǎng)快、扎的深、分布廣，成為發(fā)達(dá)的根系，增強(qiáng)吸收水分、養(yǎng)分和抵抗外界不良條件的能力，實(shí)現(xiàn)壯苗早發(fā)。另外棉農(nóng)表示苗期對(duì)于病蟲害的防治要早下手，早噴灑農(nóng)藥治理，苗期病蟲害主要以棉蚜蟲、盲蝽蟓、紅蜘蛛為主。
