4results about How to "Improve seed setting rate" patented technology

The present application belongs to the field of fertilizer preparation, and particularly relates to an active silicon-calcium-potassium-magnesium fertilizer, and preparation and application thereof. The active silicon-calcium-potassium-magnesium fertilizer contains biomass ash 60%, mineral humic acid 30% and binder 10% by weight. The active silicon-calcium-potassium-magnesium fertilizer is used as base fertilizer or topdressing. When used as base fertilizer, the application amount is 200 kg, and when used as topdressing, the application amount is 50 kg. The present application uses biomass ash of a biomass thermal power plant as the main raw material, adds appropriate amount of mineral humic acid, uses clay as binder, and uses granulation process to prepare granules, and then uses film spraying technology to inoculate functional bacterial agent. On the one hand, the present application solves the resource recycling of a large amount of biomass ash of a biomass power plant, and on the other hand, the present application improves the activity of silicon, calcium, potassium and magnesium in the product, and meets the needs of crops for silicon, calcium, potassium and magnesium.

The invention discloses a method for producing rice haploids and application of the method in breeding, by editing one or more of OsFEB1, OsFEB2 and OsFEB3 genes in rice, the functions of the OsFEB1, OsFEB2 and / or OsFEB3 genes are lost, a rice haploid induction line is obtained, generation of haploids is induced through sexual reproduction, the gene sequence of the OsFEB1 is as shown in SEQ ID NO.1, the gene sequence of the OsFEB2 is as shown in SEQ ID NO.2, the gene sequence of the OsFEB2 is as shown in SEQ ID NO.1, the gene sequence of the OsFEB2 is as shown in SEQ ID NO.2, and the gene sequence of the OsFEB3 is as shown in SEQ ID NO.2. And the gene sequence of the OsFEB3 is as shown in SEQ ID NO. 3. The haploid induction line obtained by the method provided by the invention has the capability of inducing generation of haploid plants for breeding. An RHG1 haploid induction line is combined with an MIME system, and an apomixis material is artificially created to fix the heterosis of rice.

The invention provides a filler-free synergistic fertilizer and a preparation method thereof. The fertilizer comprises the following components in parts by weight: 240-300 parts of urea, 80-110 parts of potassium chloride, 55-80 parts of ammonium chloride, 4-7 parts of polyglutamic acid, 3-10 parts of polyaspartic acid, 2-5 parts of potassium fulvate, 3-6 parts of alginic acid, 2-5 parts of zinc sulfate and 2-6 parts of boric acid. According to the preparation process disclosed by the invention, the synergist can be uniformly and stably arranged in the internal structure of the ultrahigh-concentration fertilizer granules on the premise of not introducing any filler, and the ultrahigh-concentration fertilizer granules can be used for improving agronomic characters of crops, especially rice.

The invention belongs to the technical field of plant genetic engineering and plant genetic improvement, and particularly relates to application of negative regulation of OsABA8ox1 in improvement of alkali resistance of rice and / or transfer level of rice stem sheath assimilates. The OsABA8ox1 gene is a newly found key gene for promoting NSC transport of the stem sheaths of the rice and is also a main gene for improving alkali resistance of the rice, the NSC transport efficiency of the stem sheaths can be improved through genetic improvement, the maturing rate can be increased, the harvest index can be increased, meanwhile, the stress resistance of the rice is enhanced, the alkali resistance of the rice is remarkably improved, and the application prospect is wide.